DRAFT

y = -0.0003x + 3.664

R2 = 0.0014 p<0.001

0

2

4

6

8

10

12

0 200 400 600 800 1000 1200 1400 1600 1800

DO (mg/L)

COD (mg/L)

Figure 1

COD (mg/L) vs. Daily Minimum DO (mg/L) at ECTC02
DRAFT

y = 0.0025x + 3.6859

R2 = 0.0027 p<0.001

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180 200

DO (mg/L)

COD (mg/L)

Figure 2

COD less than 200 mg/L vs. Daily Minimum DO (mg/L) at ECTC02
DRAFT

y = 0.0013x + 2.2144

R2 = 0.0309 p=0.1

0

2

4

6

8

10

12

200 400 600 800 1000 1200 1400 1600 1800

DO (mg/L)

COD (mg/L)

Figure 3

COD greater than 200 mg/L vs. Daily Minimum DO (mg/L) at ECTC02
DRAFT

y = -0.0007x + 6.0351

R2 = 0.0128 p<0.001

0

2

4

6

8

10

12

14

0 200 400 600 800 1000 1200 1400 1600 1800

DO (mg/L)

COD (mg/L)

Figure 4

COD (mg/L) vs. Average Daily DO (mg/L) at ECTC02
DRAFT

y = -0.0021x + 6.4973

R2 = 0.0026 p<0.001

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180 200

DO (mg/L)

COD (mg/L)

Figure 5

COD less than 200 mg/L vs. Average Daily DO (mg/L) at ECTC02
DRAFT

y = 0.0023x + 3.3358

R2 = 0.1233 p=0.005

0

2

4

6

8

10

12

200 400 600 800 1000 1200 1400 1600 1800

DO (mg/L)

COD (mg/L)

Figure 6

COD greater than 200 mg/L vs. Average Daily DO (mg/L) at ECTC02
Date COD (mg/L) Daily Min DO (mg/L) Daily Average DO (mg/L)

11/29/01 97 5.26 6.51

11/30/01 98 5.36 6.72

12/01/01 375 6.31 7.14

12/02/01 616 6.43 7.43

12/03/01 725 5.83 6.92

12/04/01 285 5.81 6.61

12/05/01 209 4.63 5.92

12/06/01 66 4.46 5.70

01/25/02 827 2.91 5.05

01/26/02 657 5.37 6.50

01/27/02 653 4.51 5.41

01/28/02 169 3.52 4.33

01/29/02 85 2.76 3.98

01/30/02 93 2.14 4.02

02/02/02 32 0.31 2.48

02/03/02 32 0.18 3.34

02/04/02 50 2.86 5.72

03/08/02 531 4.37 5.91

03/09/02 144 1.42 4.09

03/10/02 1640 2.72 5.21

03/11/02 649 0.34 3.37

03/12/02 465 1.07 2.68

03/13/02 468 0.59 2.24

03/14/02 1072 1.87 5.35

03/15/02 1175 2.69 5.53

03/16/02 1240 1.14 4.16

03/29/02 120 3.99 6.69

03/30/02 81 4.35 6.72

03/31/02 140 4.51 7.34

04/01/02 109 7.11 8.69

04/02/02 158 6.60 9.00

04/03/02 51 8.09 10.16

04/04/02 92 7.74 9.62

04/05/02 71 7.44 9.08

04/06/02 76 7.99 8.93

04/07/02 39 3.49 8.94

04/18/02 35 1.77 5.46

04/19/02 20 2.78 5.92

04/20/02 32 3.87 8.23

04/21/02 120 2.84 6.15

04/22/02 238 0.08 4.29

04/23/02 176 0.08 3.37

04/24/02 23 0.08 4.80

04/25/02 41 4.24 7.23

04/27/02 90 3.73 6.69

04/28/02 81 4.23 6.82

04/29/02 18 4.35 6.46

04/30/02 36 3.46 6.38

05/01/02 622 0.42 2.82

05/02/02 298 0.11 1.02

05/03/02 605 0.10 2.16
05/04/02 222 0.10 0.20

06/26/02 0.41 5.43

06/27/02 67 0.09 3.23

06/28/02 0.06 1.41

06/29/02 0.14 4.42

06/30/02 0.34 3.24

07/09/02 3.36 5.57

07/10/02 3.18 5.53

07/11/024 3.96 5.40

07/12/02 3.47 5.68

07/13/02 3.73 5.89

07/23/02 2.68 5.39

08/08/02 26 5.18 6.23

08/09/02 3.52 5.45

08/10/02 2.83 5.60

08/11/02 2.02 5.50

08/12/02 19 4.48 6.87

08/13/02 3.87 6.47

08/14/02 2.55 5.85

08/15/02 21 1.45 5.00

08/16/02 2.04 5.08

08/23/02 5.27 6.73

08/24/02 2.99 6.23

08/25/02 2.87 6.01

08/26/02 38 2.46 5.42

08/27/02 4.04 5.93

08/28/02 2.01 4.95

09/05/02 2.15 5.63

09/06/02 66 3.24 6.04

09/11/02 5.82 6.93

09/12/02 36 3.94 6.46

09/13/02 6.43 7.58

09/28/02 6.04 7.31

09/29/02 5.23 6.80

09/30/02 4.16 7.51

10/01/02 6.50 8.05

10/02/02 7.19 8.13

10/03/02 7.81 8.42

10/04/02 10 6.42 8.10

10/05/02 7.12 8.60

10/06/02 7.41 8.45

10/07/02 11 5.78 8.31

10/08/02 7.53 8.48

10/09/02 4.65 7.49

10/10/02 2.57 6.72

10/11/02 6.77 7.80

10/12/02 6.06 7.98

10/13/02 2.19 8.11

10/29/02 2.84 9.33

10/30/02 10.69 11.46

10/31/02 1203 11.00 11.64

11/03/02 8.34 9.60
11/04/02 5.49 8.70
Date COD (mg/L) Daily Min DO (mg/L)

11/29/01 97 5.26

11/30/01 98 5.36

12/01/01 375 6.31

12/02/01 616 6.43

12/03/01 725 5.83

12/04/01 285 5.81

12/05/01 209 4.63

12/06/01 66 4.46

01/25/02 827 2.91

01/26/02 657 5.37

01/27/02 653 4.51

01/28/02 169 3.52

01/29/02 85 2.76

01/30/02 93 2.14

02/02/02 32 0.31

02/03/02 32 0.18

02/04/02 50 2.86

03/08/02 531 4.37

03/09/02 144 1.42

03/10/02 1640 2.72

03/11/02 649 0.34

03/12/02 465 1.07

03/13/02 468 0.59

03/14/02 1072 1.87

03/15/02 1175 2.69

03/16/02 1240 1.14

03/29/02 120 3.99

03/30/02 81 4.35

03/31/02 140 4.51

04/01/02 109 7.11

04/02/02 158 6.60

04/03/02 51 8.09

04/04/02 92 7.74

04/05/02 71 7.44

04/06/02 76 7.99

04/07/02 39 3.49

04/18/02 35 1.77

04/19/02 20 2.78

04/20/02 32 3.87

04/21/02 120 2.84

04/22/02 238 0.08

04/23/02 176 0.08

04/24/02 23 0.08

04/25/02 41 4.24

04/27/02 90 3.73

04/28/02 81 4.23

04/29/02 18 4.35

04/30/02 36 3.46

05/01/02 622 0.42

05/02/02 298 0.11

05/03/02 605 0.10
05/04/02 222 0.10

06/27/02 67 0.09

07/11/024 3.96

08/08/02 26 5.18

08/12/02 19 4.48

08/15/02 21 1.45

08/26/02 38 2.46

09/06/02 66 3.24

09/12/02 36 3.94

10/04/02 10 6.42

10/07/02 11 5.78

10/31/02 1203 11.00
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.03775742

R Square 0.001425623

Adjusted R Square -0.014944449

Standard Error 2.490331393

Observations 63

ANOVA

df SS MS

Regression 1 0.54009271 0.54009271

Residual 61 378.3067773 6.201750447

Total 62 378.84687

Coefficients Standard Error t Stat

Intercept 3.66400987 0.394712542 9.282729772

COD (mg/L) -0.000253738 0.000859821 -0.295105303

RESIDUAL OUTPUT

Observation Predicted Daily Min DO (mg/L) Residuals Standard Residuals

1 3.639397308 1.622802692 0.656960871

2 3.639143571 1.722656429 0.697384761

3 3.568858215 2.739141785 1.108889566

4 3.507707419 2.924792581 1.184046767

5 3.480050005 2.354849995 0.953316328

6 3.591694612 2.218305388 0.898038835

7 3.610978681 1.020421319 0.413098205

8 3.647263178 0.809836822 0.327847067

9 3.454168755 -0.549168755 -0.222320548

10 3.497304172 1.872795828 0.758165848

11 3.498319122 1.008580878 0.408304827

12 3.621128191 -0.101928191 -0.041263694

13 3.642442161 -0.886842161 -0.359021218

14 3.640412259 -1.499012259 -0.606846664

15 3.655890262 -3.348790262 -1.355694181

16 3.655890262 -3.473290262 -1.406095643

17 3.651322982 -0.796122982 -0.32229528

18 3.529275127 0.836524873 0.338651218

19 3.627471634 -2.208171634 -0.893936378

20 3.247879969 -0.525479969 -0.212730592

21 3.499334073 -3.159034073 -1.27887499

22 3.546021818 -2.475321818 -1.002087059

23 3.545260605 -2.955960605 -1.19666455

24 3.392003008 -1.524503008 -0.617166109

25 3.36586802 -0.67666802 -0.273936205

26 3.349375067 -2.212275067 -0.895597574

27 3.63356134 0.35873866 0.145228538
28 3.643457112 0.705742888 0.285706614

29 3.628486585 0.878413415 0.355609

30 3.636352455 3.476747545 1.407495259

31 3.623919306 2.974580694 1.20420254

32 3.651069245 4.43525521 1.795528895

33 3.640665997 4.096358515 1.658333001

34 3.64599449 3.795264763 1.53644091

35 3.644725801 4.346788669 1.759714895

36 3.654114098 -0.168114098 -0.068057802

37 3.655129049 -1.885129049 -0.763158718

38 3.658935115 -0.878935115 -0.3558202

39 3.655890262 0.214109738 0.086678264

40 3.63356134 -0.79356134 -0.321258248

41 3.603620286 -3.523620286 -1.426470799

42 3.619352027 -3.539352027 -1.432839495

43 3.658173901 -3.578173901 -1.448555794

44 3.653606622 0.586393378 0.23739023

45 3.641173473 0.088826527 0.035959734

46 3.643457112 0.586542888 0.237450756

47 3.65944259 0.69055741 0.279559061

48 3.654875311 -0.194875311 -0.078891571

49 3.506184993 -3.086184993 -1.249383422

50 3.588396022 -3.478396022 -1.408162613

51 3.510498534 -3.410498534 -1.380675604

52 3.60768009 -3.50768009 -1.420017713

53 3.647009441 -3.557009441 -1.439987764

54 3.662994919 0.297005081 0.12023687

55 3.657412688 1.522587312 0.616390576

56 3.659188852 0.820811148 0.332289815

57 3.658681377 -2.208681377 -0.894142737

58 3.654367835 -1.194367835 -0.48351715

59 3.647263178 -0.407263178 -0.164872768

60 3.654875311 0.285124689 0.115427319

61 3.661472492 2.758527508 1.116737508

62 3.661218754 2.118781246 0.857748375

63 3.358763363 7.636545791 3.09151063
F Significance F

0.08708714 0.768915539

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

2.83876E-13 2.874733139 4.4532866 2.874733139 4.4532866

0.768915539 -0.001973057 0.001465581 -0.001973057 0.001465581

PROBABILITY OUTPUT

Percentile Daily Min DO (mg/L)

0.793650794 0.08

2.380952381 0.08

3.968253968 0.08

5.555555556 0.09

7.142857143 0.1

8.73015873 0.1

10.31746032 0.11

11.9047619 0.1826

13.49206349 0.3071

15.07936508 0.3403

16.66666667 0.42

18.25396825 0.5893

19.84126984 1.0707

21.42857143 1.1371

23.01587302 1.4193

24.6031746 1.45

26.19047619 1.77

27.77777778 1.8675

29.36507937 2.1414

30.95238095 2.46

32.53968254 2.6892

34.12698413 2.7224

35.71428571 2.7556

37.3015873 2.78

38.88888889 2.84

40.47619048 2.8552

42.06349206 2.905
43.65079365 3.24

45.23809524 3.46

46.82539683 3.486

48.41269841 3.5192

50 3.73

51.58730159 3.87

53.17460317 3.94

54.76190476 3.96

56.34920635 3.9923

57.93650794 4.23

59.52380952 4.24

61.11111111 4.3492

62.6984127 4.35

64.28571429 4.3658

65.87301587 4.4571

67.46031746 4.48

69.04761905 4.5069

70.63492063 4.5069

72.22222222 4.6314

73.80952381 5.18

75.3968254 5.2622

76.98412698 5.3618

78.57142857 5.3701

80.15873016 5.78

81.74603175 5.81

83.33333333 5.8349

84.92063492 6.308

86.50793651 6.42

88.0952381 6.4325

89.68253968 6.5985

91.26984127 7.1131

92.85714286 7.441259253

94.44444444 7.737024512

96.03174603 7.99151447

97.61904762 8.086324454

99.20634921 10.99530915
-5

0

5

10

Residuals

0 500 1000 1500 2000

COD (mg/L)

COD (mg/L) Residual Plot

0.00

5.00

10.00

15.00

Daily Min DO 

0 1000 2000

(mg/L)

COD (mg/L)

COD (mg/L) Line Fit Plot

Daily Min DO 

(mg/L)

Predicted Daily 

Min DO (mg/L)

0

5

10

15

Daily Min DO 

0 50 100 150

(mg/L)

Sample Percentile

Normal Probability Plot
Date COD (mg/L) Daily Min DO (mg/L)

11/29/01 97 5.26

11/30/01 98 5.36

12/06/01 66 4.46

01/28/02 169 3.52

01/29/02 85 2.76

01/30/02 93 2.14

02/02/02 32 0.31

02/03/02 32 0.18

02/04/02 50 2.86

03/09/02 144 1.42

03/29/02 120 3.99

03/30/02 81 4.35

03/31/02 140 4.51

04/01/02 109 7.11

04/02/02 158 6.60

04/03/02 51 8.09

04/04/02 92 7.74

04/05/02 71 7.44

04/06/02 76 7.99

04/07/02 39 3.49

04/18/02 35 1.77

04/19/02 20 2.78

04/20/02 32 3.87

04/21/02 120 2.84

04/23/02 176 0.08

04/24/02 23 0.08

04/25/02 41 4.24

04/27/02 90 3.73

04/28/02 81 4.23

04/29/02 18 4.35

04/30/02 36 3.46

06/27/02 67 0.09

07/11/02 4 3.96

08/08/02 26 5.18

08/12/02 19 4.48

08/15/02 21 1.45

08/26/02 38 2.46

09/06/02 66 3.24

09/12/02 36 3.94

10/04/02 10 6.42

10/07/02 11 5.78
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.0521822

R Square 0.002722982

Adjusted R Square -0.022848224

Standard Error 2.228795899

Observations 41

ANOVA

df SS MS F

Regression 1 0.528974 0.528973806 0.106486258

Residual 39 193.7337 4.967531159

Total 40 194.2627

Coefficients tandard Erro t Stat P-value

Intercept 3.685923296 0.620389 5.941305798 6.24852E-07

COD (mg/L) 0.002477738 0.007593 0.326322323 0.745925232

RESIDUAL OUTPUT

Observation Predicted Daily Min DO (mg/L) Residuals Standard Residuals

1 3.926263885 1.335936 0.607034092

2 3.928741623 1.433058 0.651165338

3 3.849454006 0.607646 0.27610739

4 4.104661023 -0.58546 -0.266026793

5 3.896531028 -1.14093 -0.518426011

6 3.916352933 -1.77495 -0.806518314

7 3.765210913 -3.45811 -1.57132605

8 3.765210913 -3.58261 -1.627897427

9 3.809810197 -0.95461 -0.433763956

10 4.042717572 -2.62342 -1.192050942

11 3.98325186 0.009048 0.004111372

12 3.886620076 0.46258 0.210191027

13 4.03280662 0.474093 0.21542261

14 3.955996741 3.157103 1.434551615

15 4.077405905 2.521094 1.145556325

16 3.812287935 4.274037 1.942073315

17 3.913875195 3.823149 1.737195327

18 3.861842696 3.579417 1.626445948

19 3.874231386 4.117283 1.870846346

20 3.782555079 -0.29656 -0.134751236

21 3.772644127 -2.00264 -0.909978588

22 3.735478057 -0.95548 -0.434158302

23 3.765210913 0.104789 0.047614963

24 3.98325186 -1.14325 -0.51948057

25 4.122005189 -4.04201 -1.836640932

26 3.742911271 -3.66291 -1.664384991

27 3.787510555 0.452489 0.205606029
28 3.908919719 -0.17892 -0.081299074

29 3.886620076 0.34338 0.15602791

30 3.73052258 0.619477 0.281483455

31 3.775121865 -0.31512 -0.143187772

32 3.851931744 -3.76193 -1.709378762

33 3.695834248 0.264166 0.120033897

34 3.750344485 1.429656 0.649619116

35 3.733000318 0.747 0.339428112

36 3.737955795 -2.28796 -1.039620947

37 3.780077341 -1.32008 -0.599828047

38 3.849454006 -0.60945 -0.27692893

39 3.775121865 0.164878 0.074918739

40 3.710700676 2.709299 1.231074628

41 3.713178414 2.066822 0.939140092
Significance F

0.745925232

Lower 95% Upper 95% Lower 95.0% Upper 95.0%

2.43106847 4.940778122 2.43106847 4.940778122

-0.012880369 0.017835845 -0.012880369 0.017835845

PROBABILITY OUTPUT

Percentile Daily Min DO (mg/L)

1.219512195 0.08

3.658536585 0.08

6.097560976 0.09

8.536585366 0.1826

10.97560976 0.3071

13.41463415 1.4193

15.85365854 1.45

18.29268293 1.77

20.73170732 2.1414

23.17073171 2.46

25.6097561 2.7556

28.04878049 2.78

30.48780488 2.84

32.92682927 2.8552

35.36585366 3.24

37.80487805 3.46

40.24390244 3.486

42.68292683 3.5192

45.12195122 3.73

47.56097561 3.87

50 3.94

52.43902439 3.96

54.87804878 3.9923

57.31707317 4.23

59.75609756 4.24

62.19512195 4.3492

64.63414634 4.35

-6

-4

-2

0

2

4

6

0

Residuals

COD 

0

5

10

Daily Min DO 

(mg/L)
67.07317073 4.4571

69.51219512 4.48

71.95121951 4.5069

74.3902439 5.18

76.82926829 5.2622

79.26829268 5.3618

81.70731707 5.78

84.14634146 6.42

86.58536585 6.5985

89.02439024 7.1131

91.46341463 7.441259253

93.90243902 7.737024512

96.34146341 7.99151447

98.7804878 8.086324454
50 100 150 200

COD (mg/L)

D (mg/L) Residual Plot

0.00

5.00

0.00

0 100 200

COD (mg/L)

COD (mg/L) Line Fit Plot

Daily Min DO 

(mg/L)

Predicted Daily 

Min DO (mg/L) 0

2

4

6

8

10

Daily Min DO 

0 50 100 150

(mg/L)

Sample Percentile

Normal Probability Plot
Date COD (mg/L) Daily Min DO (mg/L)

12/01/01 375 6.31

12/02/01 616 6.43

12/03/01 725 5.83

12/04/01 285 5.81

12/05/01 209 4.63

01/25/02 827 2.91

01/26/02 657 5.37

01/27/02 653 4.51

03/08/02 531 4.37

03/10/02 1640 2.72

03/11/02 649 0.34

03/12/02 465 1.07

03/13/02 468 0.59

03/14/02 1072 1.87

03/15/02 1175 2.69

03/16/02 1240 1.14

04/22/02 238 0.08

05/01/02 622 0.42

05/02/02 298 0.11

05/03/02 605 0.10

05/04/02 222 0.10

10/31/02 1203 11.00
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.175790192

R Square 0.030902192

Adjusted R Square -0.017552699

Standard Error 2.925564266

Observations 22

ANOVA

df SS MS

Regression 1 5.458470306 5.458470306

Residual 20 171.1785255 8.558926274

Total 21 176.6369958

Coefficients Standard Error t Stat

Intercept 2.214433169 1.28154703 1.727937498

COD (mg/L) 0.001331227 0.001666964 0.798593615

RESIDUAL OUTPUT

Observation Predicted Daily Min DO (mg/L) Residuals Standard Residuals

1 2.713643307 3.594356693 1.258943326

2 3.034469022 3.398030978 1.190179157

3 3.179572769 2.655327231 0.930043059

4 2.593832874 3.216167126 1.126480337

5 2.492659619 2.138740381 0.749105656

6 3.315357927 -0.410357927 -0.143730135

7 3.089049331 2.281050669 0.798950622

8 3.083724423 1.423175577 0.498475123

9 2.921314724 1.444485276 0.505938963

10 4.397645506 -1.675245506 -0.586764011

11 3.078399514 -2.738099514 -0.95903451

12 2.83345374 -1.76275374 -0.617414254

13 2.837447421 -2.248147421 -0.787426077

14 3.64150855 -1.77400855 -0.621356314

15 3.778624935 -1.089424935 -0.381577113

16 3.865154692 -2.728054692 -0.955516255

17 2.531265203 -2.451265203 -0.858569205

18 3.042456385 -2.622456385 -0.918529864

19 2.611138825 -2.501138825 -0.876037717

20 3.019825525 -2.919825525 -1.022685051

21 2.509965571 -2.409965571 -0.84410378

22 3.815899292 7.179409863 2.514628041
F Significance F

0.637751761 0.433907459

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

0.099409974 -0.45882585 4.887692188 -0.45882585 4.887692188

0.433907459 -0.002145998 0.004808452 -0.002145998 0.004808452

PROBABILITY OUTPUT

Percentile Daily Min DO (mg/L)

2.272727273 0.08

6.818181818 0.1

11.36363636 0.1

15.90909091 0.11

20.45454545 0.3403

25 0.42

29.54545455 0.5893

34.09090909 1.0707

38.63636364 1.1371

43.18181818 1.8675

47.72727273 2.6892

52.27272727 2.7224

56.81818182 2.905

61.36363636 4.3658

65.90909091 4.5069

70.45454545 4.6314

75 5.3701

79.54545455 5.81

84.09090909 5.8349

88.63636364 6.308

93.18181818 6.4325

97.72727273 10.99530915

-5

0

5

10

Residuals

0
0 500 1000 1500 2000

COD (mg/L)

COD (mg/L) Residual Plot

0.00

5.00

10.00

15.00

Daily Min DO 

0 1000 2000

(mg/L)

COD (mg/L)

COD (mg/L) Line Fit Plot

Daily Min DO 

(mg/L)

Predicted Daily 

Min DO (mg/L) 0

5

10

15

Daily Min DO 

0 50 100 150

(mg/L)

Sample Percentile

Normal Probability Plot
Date COD (mg/L) Daily Average DO (mg/L)

11/29/01 97 6.51

11/30/01 98 6.72

12/01/01 375 7.14

12/02/01 616 7.43

12/03/01 725 6.92

12/04/01 285 6.61

12/05/01 209 5.92

12/06/01 66 5.70

01/25/02 827 5.05

01/26/02 657 6.50

01/27/02 653 5.41

01/28/02 169 4.33

01/29/02 85 3.98

01/30/02 93 4.02

02/02/02 32 2.48

02/03/02 32 3.34

02/04/02 50 5.72

03/08/02 531 5.91

03/09/02 144 4.09

03/10/02 1640 5.21

03/11/02 649 3.37

03/12/02 465 2.68

03/13/02 468 2.24

03/14/02 1072 5.35

03/15/02 1175 5.53

03/16/02 1240 4.16

03/29/02 120 6.69

03/30/02 81 6.72

03/31/02 140 7.34

04/01/02 109 8.69

04/02/02 158 9.00

04/03/02 51 10.16

04/04/02 92 9.62

04/05/02 71 9.08

04/06/02 76 8.93

04/07/02 39 8.94

04/18/02 35 5.46

04/19/02 20 5.92

04/20/02 32 8.23

04/21/02 120 6.15

04/22/02 238 4.29

04/23/02 176 3.37

04/24/02 23 4.80

04/25/02 41 7.23

04/27/02 90 6.69

04/28/02 81 6.82

04/29/02 18 6.46

04/30/02 36 6.38

05/01/02 622 2.82

05/02/02 298 1.02

05/03/02 605 2.16
05/04/02 222 0.20

06/27/02 67 3.23

07/11/024 5.40

08/08/02 26 6.23

08/12/02 19 6.87

08/15/02 21 5.00

08/26/02 38 5.42

09/06/02 66 6.04

09/12/02 36 6.46

10/04/02 10 8.10

10/07/02 11 8.31

10/31/02 1203 11.64
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.113311101

R Square 0.012839406

Adjusted R Square -0.003343555

Standard Error 2.228999648

Observations 63

ANOVA

df SS MS

Regression 1 3.941912131 3.941912131

Residual 61 303.0748052 4.96843943

Total 62 307.0167173

Coefficients Standard Error t Stat

Intercept 6.035134774 0.353291984 17.08256924

COD (mg/L) -0.000685495 0.000769593 -0.890724647

RESIDUAL OUTPUT

Observation Predicted Daily Average DO (mg/L) Residuals Standard Residuals

1 5.968641745 0.543054089 0.245620163

2 5.96795625 0.74985625 0.339155562

3 5.778074093 1.365632157 0.617667374

4 5.612869762 1.813382322 0.820182134

5 5.53815079 1.383616918 0.625801776

6 5.839768656 0.76668551 0.346767337

7 5.891866288 0.02560142 0.011579372

8 5.989892094 -0.289175428 -0.130792341

9 5.468230285 -0.413616743 -0.187076415

10 5.58476446 0.911368873 0.412206769

11 5.587506441 -0.179187836 -0.081045602

12 5.919286094 -1.584956927 -0.716866675

13 5.976867687 -1.999179145 -0.904216942

14 5.971383725 -1.950125948 -0.88203047

15 6.01319893 -3.532104138 -1.59754988

16 6.01319893 -2.675388513 -1.210062453

17 6.000860017 -0.2850996 -0.128948869

18 5.671136849 0.235955859 0.106721444

19 5.936423473 -1.843399514 -0.833758734

20 4.910922727 0.301217898 0.136239079

21 5.590248422 -2.22209113 -1.005038719

22 5.716379529 -3.035220154 -1.372812183

23 5.714323044 -3.473409502 -1.571002642

24 5.300283973 0.049238944 0.022270484

25 5.229677972 0.297776194 0.134682417

26 5.185120788 -1.026993704 -0.464503198

27 5.952875356 0.740061345 0.334725384
28 5.979609667 0.736460699 0.333096833

29 5.939165453 1.403046292 0.634589567

30 5.960415803 2.734359245 1.236734568

31 5.926826541 3.072647191 1.389740211

32 6.000174522 4.154979752 1.879272848

33 5.972069221 3.651286595 1.651455403

34 5.986464619 3.095459002 1.400057859

35 5.983037143 2.944668103 1.331856024

36 6.008400464 2.929469619 1.324981839

37 6.011142444 -0.553656689 -0.250415657

38 6.021424871 -0.097557001 -0.044124456

39 6.01319893 2.220867437 1.00448525

40 5.952875356 0.197860081 0.089490948

41 5.871986929 -1.580451511 -0.714828901

42 5.914487628 -2.544173665 -1.150714751

43 6.019368386 -1.217703244 -0.550759999

44 6.007029473 1.223473792 0.553369984

45 5.973440211 0.71346912 0.322697877

46 5.979609667 0.845271514 0.382311323

47 6.022795862 0.438913612 0.198518039

48 6.010456949 0.369229787 0.167000456

49 5.608756791 -2.786673457 -1.260395977

50 5.83085722 -4.81023222 -2.175639677

51 5.620410208 -3.458936524 -1.564456599

52 5.882954851 -5.680399295 -2.569211115

53 5.989206599 -2.762281327 -1.249363561

54 6.032392794 -0.63312196 -0.28635733

55 6.0173119 0.210581645 0.095244836

56 6.022110367 0.848242431 0.383655051

57 6.020739376 -1.023318251 -0.462840813

58 6.009085959 -0.592698551 -0.26807406

59 5.989892094 0.054390636 0.024600564

60 6.010456949 0.445661352 0.201570002

61 6.028279823 2.066885035 0.934839917

62 6.027594328 2.2843924 1.033217216

63 5.210484108 6.426088859 2.906482109
F Significance F

0.793390397 0.376576701

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

6.3051E-25 5.328683593 6.741585956 5.328683593 6.741585956

0.376576701 -0.002224391 0.000853401 -0.002224391 0.000853401

PROBABILITY OUTPUT

Percentile Daily Average DO (mg/L)

0.793650794 0.202555556

2.380952381 1.020625

3.968253968 2.161473684

5.555555556 2.240913542

7.142857143 2.481094792

8.73015873 2.681159375

10.31746032 2.822083333

11.9047619 3.226925272

13.49206349 3.337810417

15.07936508 3.368157292

16.66666667 3.370313963

18.25396825 3.977688542

19.84126984 4.021257778

21.42857143 4.093023958

23.01587302 4.158127083

24.6031746 4.291535418

26.19047619 4.334329167

27.77777778 4.801665142

29.36507937 4.997421125

30.95238095 5.054613542

32.53968254 5.212140625

34.12698413 5.349522917

35.71428571 5.399270833

37.3015873 5.408318605

38.88888889 5.416387408

40.47619048 5.457485755

42.06349206 5.527454167
43.65079365 5.700716667

45.23809524 5.715760417

46.82539683 5.907092708

48.41269841 5.917467708

50 5.923867871

51.58730159 6.044282731

53.17460317 6.150735438

54.76190476 6.227893545

56.34920635 6.379686735

57.93650794 6.456118301

59.52380952 6.461709474

61.11111111 6.496133333

62.6984127 6.511695833

64.28571429 6.606454167

65.87301587 6.686909331

67.46031746 6.692936702

69.04761905 6.716070367

70.63492063 6.7178125

72.22222222 6.824881182

73.80952381 6.870352797

75.3968254 6.921767708

76.98412698 7.14370625

78.57142857 7.230503265

80.15873016 7.342211746

81.74603175 7.426252083

83.33333333 8.095164857

84.92063492 8.234066367

86.50793651 8.311986728

88.0952381 8.694775048

89.68253968 8.927705246

91.26984127 8.937870082

92.85714286 8.999473731

94.44444444 9.081923621

96.03174603 9.623355816

97.61904762 10.15515427

99.20634921 11.63657297
-10

-5

0

5

10

0 500 1000 1500 2000

Residuals

COD (mg/L)

COD (mg/L) Residual Plot

0.00

5.00

10.00

15.00

0 1000 2000

Daily Average DO 

(mg/L)

COD (mg/L)

COD (mg/L) Line Fit Plot

Daily Average DO 

(mg/L)

Predicted Daily 

0 Average DO (mg/L)

5

10

15

0 50 100 150

Daily Average DO 

(mg/L)

Sample Percentile

Normal Probability Plot
Date COD (mg/L Daily Average DO (mg/L)

11/29/01 97 6.51

11/30/01 98 6.72

12/06/01 66 5.70

01/28/02 169 4.33

01/29/02 85 3.98

01/30/02 93 4.02

02/02/02 32 2.48

02/03/02 32 3.34

02/04/02 50 5.72

03/09/02 144 4.09

03/29/02 120 6.69

03/30/02 81 6.72

03/31/02 140 7.34

04/01/02 109 8.69

04/02/02 158 9.00

04/03/02 51 10.16

04/04/02 92 9.62

04/05/02 71 9.08

04/06/02 76 8.93

04/07/02 39 8.94

04/18/02 35 5.46

04/19/02 20 5.92

04/20/02 32 8.23

04/21/02 120 6.15

04/23/02 176 3.37

04/24/02 23 4.80

04/25/02 41 7.23

04/27/02 90 6.69

04/28/02 81 6.82

04/29/02 18 6.46

04/30/02 36 6.38

06/27/02 67 3.23

07/11/02 4 5.40

08/08/02 26 6.23

08/12/02 19 6.87

08/15/02 21 5.00

08/26/02 38 5.42

09/06/02 66 6.04

09/12/02 36 6.46

10/04/02 10 8.10

10/07/02 11 8.31
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.051046166

R Square 0.002605711

Adjusted R Square -0.022968501

Standard Error 1.909686692

Observations 41

ANOVA

df SS MS

Regression 1 0.371576493 0.371576493

Residual 39 142.2292272 3.64690326

Total 40 142.6008036

Coefficients Standard Error t Stat

Intercept 6.497288622 0.531564793 12.22294762

COD (mg/L) -0.002076646 0.006505796 -0.319199347

RESIDUAL OUTPUT

Observation Predicted Daily Average DO (mg/L) Residuals Standard Residuals

1 6.295853984 0.21584185 0.114464608

2 6.293777338 0.424035162 0.224873066

3 6.360230002 -0.659513335 -0.349751151

4 6.146335489 -1.812006322 -0.960937804

5 6.320773733 -2.343085191 -1.24257797

6 6.304160567 -2.282902789 -1.210662218

7 6.430835958 -3.949741166 -2.094614989

8 6.430835958 -3.093025541 -1.640284107

9 6.393456334 -0.677695918 -0.359393684

10 6.198251633 -2.105227675 -1.11643808

11 6.248091131 0.44484557 0.23590918

12 6.329080316 0.386990051 0.205227413

13 6.206558216 1.13565353 0.602256403

14 6.270934235 2.423840814 1.285404052

15 6.169178592 2.830295139 1.500953701

16 6.391379688 3.763774585 1.995993745

17 6.306237212 3.317118604 1.759124473

18 6.349846773 2.732076847 1.448866869

19 6.339463545 2.588241701 1.372588642

20 6.416299438 2.521570645 1.337231845

21 6.424606021 -0.967120266 -0.512880343

22 6.455755707 -0.531887836 -0.282069176

23 6.430835958 1.803230409 0.956283788

24 6.248091131 -0.097355694 -0.051629382

25 6.131798969 -2.761485005 -1.464462516

26 6.44952577 -1.647860627 -0.873888547

27 6.412146146 0.818357119 0.433988714
28 6.310390504 0.376518827 0.199674344

29 6.329080316 0.495800866 0.262931641

30 6.459908998 0.001800475 0.000954823

31 6.422529375 -0.042842639 -0.022720181

32 6.358153356 -3.131228085 -1.660543566

33 6.488982039 -1.089711206 -0.577892406

34 6.443295832 -0.215402287 -0.1142315

35 6.457832353 0.412520444 0.218766615

36 6.453679061 -1.456257936 -0.772278378

37 6.418376083 -1.001988675 -0.531371654

38 6.360230002 -0.315947272 -0.167552217

39 6.422529375 0.033588926 0.017812779

40 6.476522165 1.618642693 0.858393779

41 6.474445519 1.837541209 0.974479389
F Significance F

0.101888223 0.751278842

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

6.5002E-15 5.422098398 7.572478846 5.422098398 7.572478846

0.751278842 -0.015235847 0.011082555 -0.015235847 0.011082555

PROBABILITY OUTPUT

Percentile Daily Average DO (mg/L)

1.219512195 2.481094792

3.658536585 3.226925272

6.097560976 3.337810417

8.536585366 3.370313963

10.97560976 3.977688542

13.41463415 4.021257778

15.85365854 4.093023958

18.29268293 4.334329167

20.73170732 4.801665142

23.17073171 4.997421125

25.6097561 5.399270833

28.04878049 5.416387408

30.48780488 5.457485755

32.92682927 5.700716667

35.36585366 5.715760417

37.80487805 5.923867871

40.24390244 6.044282731

42.68292683 6.150735438

45.12195122 6.227893545

47.56097561 6.379686735

50 6.456118301

52.43902439 6.461709474

54.87804878 6.511695833

57.31707317 6.686909331

59.75609756 6.692936702

62.19512195 6.716070367

64.63414634 6.7178125
67.07317073 6.824881182

69.51219512 6.870352797

71.95121951 7.230503265

74.3902439 7.342211746

76.82926829 8.095164857

79.26829268 8.234066367

81.70731707 8.311986728

84.14634146 8.694775048

86.58536585 8.927705246

89.02439024 8.937870082

91.46341463 8.999473731

93.90243902 9.081923621

96.34146341 9.623355816

98.7804878 10.15515427
-6

-4

-2

0

2

4

6

0 50 100 150 200

Residuals

COD (mg/L)

COD (mg/L) Residual Plot

0.00

5.00

10.00

15.00

0 100 200

Daily Average DO 

(mg/L)

COD (mg/L)

COD (mg/L) Line Fit Plot

Daily Average DO 

(mg/L)

Predicted Daily 

0 Average DO (mg/L)

5

10

15

0 50 100 150

Daily Average DO 

(mg/L)

Sample Percentile

Normal Probability Plot
Date COD (mg/L Daily Average DO (mg/L)

12/01/01 375 7.14

12/02/01 616 7.43

12/03/01 725 6.92

12/04/01 285 6.61

12/05/01 209 5.92

01/25/02 827 5.05

01/26/02 657 6.50

01/27/02 653 5.41

03/08/02 531 5.91

03/10/02 1640 5.21

03/11/02 649 3.37

03/12/02 465 2.68

03/13/02 468 2.24

03/14/02 1072 5.35

03/15/02 1175 5.53

03/16/02 1240 4.16

04/22/02 238 4.29

05/01/02 622 2.82

05/02/02 298 1.02

05/03/02 605 2.16

05/04/02 222 0.20

10/31/02 1203 11.64
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.351166596

R Square 0.123317978

Adjusted R Square 0.079483877

Standard Error 2.41961211

Observations 22

ANOVA

df SS MS

Regression 1 16.47046232 16.47046232

Residual 20 117.0904553 5.854522763

Total 21 133.5609176

Coefficients Standard Error t Stat

Intercept 3.335813585 1.059914065 3.147249097

COD (mg/L) 0.002312435 0.001378677 1.677286091

RESIDUAL OUTPUT

Observation Predicted Daily Average DO (mg/L) Residuals Standard Residuals

1 4.202976737 2.940729513 1.245386003

2 4.76027359 2.665978494 1.129030156

3 5.012329012 1.909438696 0.808638882

4 3.994857581 2.611596586 1.105999657

5 3.819112515 2.098355193 0.888644187

6 5.24819739 -0.193583848 -0.081981907

7 4.855083427 1.641049906 0.694977411

8 4.845833687 0.562484917 0.238209886

9 4.563716608 1.3433761 0.568913864

10 7.128207104 -1.916066479 -0.811445719

11 4.836583947 -1.468426655 -0.621872224

12 4.411095894 -1.729936519 -0.7326205

13 4.418033199 -2.177119657 -0.92200059

14 5.814743983 -0.465221066 -0.197019073

15 6.052924795 -0.525470628 -0.222534498

16 6.203233075 -2.045105991 -0.866093384

17 3.886173132 0.405362286 0.171669144

18 4.7741482 -1.952064867 -0.826690877

19 4.024919236 -3.004294236 -1.272305383

20 4.734836804 -2.57336312 -1.089807952

21 3.849174171 -3.646618615 -1.54432693

22 6.117672977 5.51889999 2.33722985
F Significance F

2.81328863 0.109047164

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

0.005070472 1.124872615 5.546754555 1.124872615 5.546754555

0.109047164 -0.000563433 0.005188303 -0.000563433 0.005188303

PROBABILITY OUTPUT

Percentile Daily Average DO (mg/L)

2.272727273 0.202555556

6.818181818 1.020625

11.36363636 2.161473684

15.90909091 2.240913542

20.45454545 2.681159375

25 2.822083333

29.54545455 3.368157292

34.09090909 4.158127083

38.63636364 4.291535418

43.18181818 5.054613542

47.72727273 5.212140625

52.27272727 5.349522917

56.81818182 5.408318605

61.36363636 5.527454167

65.90909091 5.907092708

70.45454545 5.917467708

75 6.496133333

79.54545455 6.606454167

84.09090909 6.921767708

88.63636364 7.14370625

93.18181818 7.426252083

97.72727273 11.63657297
-5

0

5

10

Residuals

0 500 1000 1500 2000

COD (mg/L)

COD (mg/L) Residual Plot

0.00

5.00

10.00

15.00

0 1000 2000

Daily Average DO 

(mg/L)

COD (mg/L)

COD (mg/L) Line Fit Plot

Daily Average DO 

(mg/L)

Predicted Daily 

0 Average DO (mg/L)

5

10

15

0 50 100 150

Daily Average DO 

(mg/L)

Sample Percentile

Normal Probability Plot
DRAFT

y = 0.0015x + 3.7436

R2 = 0.0028 p<0.001

0

2

4

6

8

10

12

0 100 200 300 400 500 600

DO (mg/L

COD (mg/L)

Figure 7

COD vs. Daily Minimum DO (mg/L) at WQTC03
DRAFT

y = -0.001x + 4.0327

R2 = 0.0002 p<0.001

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180

Figure 8

COD less than 200 mg/L vs. Daily Minimum DO (mg/L) at WQTC03
DRAFT

y = 0.0236x - 3.5244

R2 = 0.4048 p=0.26

0

2

4

6

8

10

12

0 100 200 300 400 500 600

Figure 9

COD greater than 200 mg/L vs. Daily Minimum DO (mg/L) at WQTC03
DRAFT

y = 0.0028x + 6.5617

R2 = 0.0173 p<0.001

0

2

4

6

8

10

12

0 100 200 300 400 500 600

Figure 10

COD (mg/L) vs. Average Daily DO (mg/L) at WQTC03
DRAFT

y = 0.0038x + 6.5743

R2 = 0.0062 p<0.001

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180

Figure 11

COD less than 200 mg/L vs. DO (mg/L) at WQTC03
DRAFT

y = 0.0155x + 2.2874

R2 = 0.3694 p=0.31

0

2

4

6

8

10

12

0 100 200 300 400 500 600

Figure 12

COD greater than 200 mg/L vs. DO (mg/L) at WQTC03
Date COD (mg/L) Daily Min DO (mg/L) Daily Average DO (mg/L)

11/27/2001 99 9.56 10.38

11/28/2001 99 8.28 9.57

11/29/2001 98 5.77 8.32

11/30/2001 170 7.45 9.02

1/24/2002 20 7.10 9.68

1/25/2002 325 3.83 7.13

1/26/2002 414 5.31 8.78

1/29/2002 226 4.06 6.45

1/30/2002 154 3.52 6.26

1/31/2002 112 3.66 5.75

2/1/2002 98 3.44 6.23

2/2/2002 60 3.60 6.01

2/3/2002 84 1.88 5.31

2/4/2002 62 2.85 6.43

2/5/2002 62 5.70 7.59

3/22/2002 342 2.37 5.39

3/23/2002 230 0.52 4.09

3/24/2002 126 4.37 5.20

3/28/2002 22 7.00 9.05

3/29/2002 35 7.33 9.24

3/30/2002 78 8.23 9.69

3/31/2002 69 6.40 9.20

4/1/2002 89 6.04 8.72

4/2/2002 74 9.74 10.89

4/3/2002 77 8.55 9.97

4/4/2002 69 7.23 9.60

4/5/2002 42 5.91 8.84

4/6/2002 46 5.28 8.16

4/7/2002 80 4.63 7.73

4/8/2002 165 1.40 5.62

4/9/2002 292 0.26 3.32

4/18/2002 86 5.23 7.78

4/19/2002 79 5.65 8.49

4/20/2002 25 6.77 9.10

4/21/2002 95 8.02 9.14

4/22/2002 66 4.36 8.50

4/23/2002 148 3.25 7.20

4/24/2002 126 2.66 6.89

4/25/2002 104 0.14 6.20

4/26/2002 59 3.51 6.59

4/27/2002 62 3.34 6.72

4/28/2002 69 1.68 6.71

4/29/2002 68 0.42 5.78

4/30/2002 59 0.22 5.51

5/1/2002 277 0.54 6.93

5/2/2002 217 6.45 8.29

5/3/2002 219 0.14 6.64

5/4/2002 150 0.14 4.28

5/5/2002 64 0.13 4.46

5/6/2002 149 0.14 4.40

5/7/2002 128 0.33 4.36
5/8/2002 119 1.75 6.51

6/29/2002 0.11 2.45

6/30/2002 1.08 4.46

7/1/2002 30 0.86 3.79

7/2/2002 0.56 4.44

7/3/2002 0.98 3.81

7/4/2002 1.54 4.87

7/5/2002 1.04 4.28

7/6/2002 1.09 4.11

7/7/2002 2.07 5.01

7/8/2002 56 4.96 6.26

7/9/2002 4.03 5.91

7/10/2002 3.99 5.55

7/11/2002 17 3.24 4.58

7/12/2002 3.74 5.58

7/13/2002 2.21 5.38

7/14/2002 3.08 5.43

7/17/2002 0.44 2.53

7/18/2002 23 0.27 1.66

7/19/2002 0.25 1.56

7/20/2002 0.15 1.47

7/21/2002 0.09 1.34

7/27/2002 0.40 3.90

7/28/2002 0.95 4.32

8/8/2002 12 3.07 5.04

8/9/2002 2.27 5.06

8/10/2002 1.41 4.42

8/11/2002 1.09 4.40

8/12/2002 33 1.24 4.58

8/13/2002 2.29 5.16

8/14/2002 1.26 4.52

8/15/2002 48 1.89 4.67

8/23/2002 3.71 5.58

8/24/2002 1.39 4.73

8/25/2002 1.04 4.20

8/26/2002 32 0.99 3.56

8/27/2002 0.99 3.00

8/28/2002 1.02 3.78

8/29/2002 12 1.39 3.84

9/5/2002 1.64 5.16

9/6/20025 1.25 4.71

9/7/2002 0.73 4.58

9/8/2002 1.20 4.45

9/9/2002 29 1.66 4.59

9/10/2002 0.59 5.43

9/11/2002 3.62 6.08

9/12/20026 1.76 5.42

9/28/2002 3.21 6.00

9/29/2002 3.10 6.23

9/30/2002 3.17 6.08

10/1/2002 4.10 6.59

10/2/2002 2.06 6.87
10/3/2002 6.34 8.25

10/4/2002 21 3.40 6.74

10/5/2002 2.88 6.29

10/6/2002 2.77 6.01

10/24/20022 7.30 9.71

10/25/2002 4.60 8.15

10/26/2002 6.71 8.83

10/27/2002 284 5.34 7.98

10/28/2002 7.43 8.96

10/29/2002 7.30 9.86

10/30/2002 9.73 11.32

10/31/2002 500 10.81 11.58

11/1/2002 9.75 10.61

11/2/2002 9.34 10.09

11/3/2002 7.06 8.93

11/4/2002 7.04 8.70

11/5/2002 4.20 6.45

11/6/2002 1.18 5.15

11/7/2002 0.27 3.67
Date COD (mg/L) Daily Min DO (mg/L)

11/27/2001 99 9.56

11/28/2001 99 8.28

11/29/2001 98 5.77

11/30/2001 170 7.45

1/24/2002 20 7.10

1/25/2002 325 3.83

1/26/2002 414 5.31

1/29/2002 226 4.06

1/30/2002 154 3.52

1/31/2002 112 3.66

2/1/2002 98 3.44

2/2/2002 60 3.60

2/3/2002 84 1.88

2/4/2002 62 2.85

2/5/2002 62 5.70

3/22/2002 342 2.37

3/23/2002 230 0.52

3/24/2002 126 4.37

3/28/2002 22 7.00

3/29/2002 35 7.33

3/30/2002 78 8.23

3/31/2002 69 6.40

4/1/2002 89 6.04

4/2/2002 74 9.74

4/3/2002 77 8.55

4/4/2002 69 7.23

4/5/2002 42 5.91

4/6/2002 46 5.28

4/7/2002 80 4.63

4/8/2002 165 1.40

4/9/2002 292 0.26

4/18/2002 86 5.23

4/19/2002 79 5.65

4/20/2002 25 6.77

4/21/2002 95 8.02

4/22/2002 66 4.36

4/23/2002 148 3.25

4/24/2002 126 2.66

4/25/2002 104 0.14

4/26/2002 59 3.51

4/27/2002 62 3.34

4/28/2002 69 1.68

4/29/2002 68 0.42

4/30/2002 59 0.22

5/1/2002 277 0.54

5/2/2002 217 6.45

5/3/2002 219 0.14

5/4/2002 150 0.14

5/5/2002 64 0.13

5/6/2002 149 0.14

5/7/2002 128 0.33
5/8/2002 119 1.75

7/1/2002 30 0.86

7/8/2002 56 4.96

7/11/2002 17 3.24

7/18/2002 23 0.27

8/8/2002 12 3.07

8/12/2002 33 1.24

8/15/2002 48 1.89

8/26/2002 32 0.99

8/29/2002 12 1.39

9/6/20025 1.25

9/9/2002 29 1.66

9/12/20026 1.76

10/4/2002 21 3.40

10/24/20022 7.30

10/27/2002 284 5.34

10/31/2002 500 10.81
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.052615313

R Square 0.002768371

Adjusted R Square -0.012341199

Standard Error 2.867532706

Observations 68

ANOVA

df SS MS

Regression 1 1.506568813 1.506568813

Residual 66 542.7010922 8.222743821

Total 67 544.207661

Coefficients Standard Error t Stat

Intercept 3.743648326 0.513812696 7.286017562

COD (mg/L) 0.001488234 0.003476844 0.428041726

RESIDUAL OUTPUT

Observation Predicted Daily Min DO (mg/L) Residuals Standard Residuals

1 3.890983534 5.670616466 1.992449525

2 3.890983534 4.392416466 1.543336277

3 3.889495299 1.879004701 0.66021429

4 3.996648178 3.448451822 1.211661243

5 3.773413014 3.331386986 1.170528894

6 4.227324514 -0.401024514 -0.14090551

7 4.359777378 0.952222622 0.334576588

8 4.079989306 -0.021289306 -0.007480292

9 3.972836427 -0.453636427 -0.159391433

10 3.910330581 -0.250030581 -0.087851703

11 3.889495299 -0.444995299 -0.156355253

12 3.832942391 -0.230742391 -0.081074531

13 3.868660017 -1.984560017 -0.69730261

14 3.83591886 -0.98901886 -0.347505456

15 3.83591886 1.86618114 0.655708554

16 4.252624499 -1.878824499 -0.660150974

17 4.085942244 -3.563042244 -1.251924172

18 3.931165863 0.434634137 0.152714715

19 3.776389483 3.220510517 1.131570913

20 3.795736531 3.533163469 1.241425852

21 3.859730611 4.36631382 1.534164751

22 3.846336501 2.552963499 0.897019035

23 3.87610119 2.16629881 0.761159049

24 3.853777673 5.890422327 2.069681354

25 3.858242376 4.690757624 1.648162568

26 3.846336501 3.382963499 1.188651015

27 3.806154172 2.103445828 0.739074784
28 3.812107109 1.466692891 0.515342833

29 3.86270708 0.76869292 0.270090889

30 3.989207006 -2.586507006 -0.90880501

31 4.178212778 -3.920912778 -1.377666934

32 3.871636486 1.358363514 0.477279808

33 3.861218845 1.788781155 0.628512999

34 3.780854186 2.989145814 1.050277724

35 3.885030596 4.134969404 1.45287869

36 3.841871798 0.518128202 0.18205151

37 3.963907021 -0.713907021 -0.250841106

38 3.931165863 -1.271165863 -0.446641707

39 3.898424706 -3.758424706 -1.320574503

40 3.831454157 -0.321454157 -0.112947364

41 3.83591886 -0.49591886 -0.174247951

42 3.846336501 -2.166336501 -0.761172292

43 3.844848267 -3.424848267 -1.203367807

44 3.831454157 -3.611454157 -1.268934368

45 4.155889262 -3.615889262 -1.270492703

46 4.066595196 2.383404804 0.837442242

47 4.069571665 -3.929571665 -1.380709354

48 3.96688349 -3.82688349 -1.344628443

49 3.838895329 -3.708895329 -1.303171671

50 3.965395255 -3.825395255 -1.344105532

51 3.934142332 -3.604142332 -1.266365257

52 3.920748222 -2.170748222 -0.762722411

53 3.788295358 -2.928295358 -1.028897075

54 3.826989454 1.133010546 0.398098926

55 3.768948311 -0.528948311 -0.185853305

56 3.777877717 -3.507877717 -1.232541353

57 3.761507139 -0.691507139 -0.242970597

58 3.792760062 -2.552760062 -0.896947555

59 3.815083578 -1.925083578 -0.676404741

60 3.791271827 -2.801271827 -0.984265601

61 3.761507139 -2.371507139 -0.833261833

62 3.751089498 -2.501089498 -0.878792387

63 3.786807124 -2.126807124 -0.747283099

64 3.752577732 -1.992577732 -0.700119745

65 3.774901249 -0.374901249 -0.131726739

66 3.746624795 3.553375205 1.248527525

67 4.166306903 1.173693097 0.412393303

68 4.487765539 6.322234461 2.22140452
F Significance F

0.183219719 0.670014316

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

5.01057E-10 2.71778855 4.769508101 2.71778855 4.769508101

0.670014316 -0.005453507 0.008429975 -0.005453507 0.008429975

PROBABILITY OUTPUT

Percentile Daily Min DO (mg/L)

0.735294118 0.13

2.205882353 0.14

3.676470588 0.14

5.147058824 0.14

6.617647059 0.14

8.088235294 0.22

9.558823529 0.2573

11.02941176 0.27

12.5 0.33

13.97058824 0.42

15.44117647 0.5229

16.91176471 0.54

18.38235294 0.86

19.85294118 0.99

21.32352941 1.24

22.79411765 1.25

24.26470588 1.39

25.73529412 1.4027

27.20588235 1.66

28.67647059 1.68

30.14705882 1.75

31.61764706 1.76

33.08823529 1.8841

34.55882353 1.89

36.02941176 2.3738

37.5 2.66

38.97058824 2.8469

-5

0

5

10

0
40.44117647 3.07

41.91176471 3.24

43.38235294 3.25

44.85294118 3.34

46.32352941 3.4

47.79411765 3.4445

49.26470588 3.51

50.73529412 3.5192

52.20588235 3.6022

53.67647059 3.6603

55.14705882 3.8263

56.61764706 4.0587

58.08823529 4.36

59.55882353 4.3658

61.02941176 4.6314

62.5 4.96

63.97058824 5.23

65.44117647 5.2788

66.91176471 5.312

68.38235294 5.34

69.85294118 5.65

71.32352941 5.7021

72.79411765 5.7685

74.26470588 5.9096

75.73529412 6.0424

77.20588235 6.3993

78.67647059 6.45

80.14705882 6.77

81.61764706 6.9969

83.08823529 7.1048

84.55882353 7.2293

86.02941176 7.3

87.5 7.3289

88.97058824 7.4451

90.44117647 8.02

91.91176471 8.226044431

93.38235294 8.2834

94.85294118 8.549

96.32352941 9.5616

97.79411765 9.7442

99.26470588 10.81
100 200 300 400 500 600

COD (mg/L) Residual Plot

0

5

10

15

0 200 400 600

COD (mg/L) Line Fit Plot

Daily Min DO 

(mg/L)

Predicted Daily 

Min DO (mg/L)

0

5

10

15

0 20 40 60 80 100 120

Normal Probability Plot
Date COD (mg/L) Daily Min DO (mg/L)

11/27/2001 99 9.56

11/28/2001 99 8.28

11/29/2001 98 5.77

11/30/2001 170 7.45

1/24/2002 20 7.10

1/30/2002 154 3.52

1/31/2002 112 3.66

2/1/2002 98 3.44

2/2/2002 60 3.60

2/3/2002 84 1.88

2/4/2002 62 2.85

2/5/2002 62 5.70

3/24/2002 126 4.37

3/28/2002 22 7.00

3/29/2002 35 7.33

3/30/2002 78 8.23

3/31/2002 69 6.40

4/1/2002 89 6.04

4/2/2002 74 9.74

4/3/2002 77 8.55

4/4/2002 69 7.23

4/5/2002 42 5.91

4/6/2002 46 5.28

4/7/2002 80 4.63

4/8/2002 165 1.40

4/18/2002 86 5.23

4/19/2002 79 5.65

4/20/2002 25 6.77

4/21/2002 95 8.02

4/22/2002 66 4.36

4/23/2002 148 3.25

4/24/2002 126 2.66

4/25/2002 104 0.14

4/26/2002 59 3.51

4/27/2002 62 3.34

4/28/2002 69 1.68

4/29/2002 68 0.42

4/30/2002 59 0.22

5/4/2002 150 0.14

5/5/2002 64 0.13

5/6/2002 149 0.14

5/7/2002 128 0.33

5/8/2002 119 1.75

7/1/2002 30 0.86

7/8/2002 56 4.96

7/11/2002 17 3.24

7/18/2002 23 0.27

8/8/2002 12 3.07

8/12/2002 33 1.24

8/15/2002 48 1.89

8/26/2002 32 0.99
8/29/2002 12 1.39

9/6/20025 1.25

9/9/2002 29 1.66

9/12/20026 1.76

10/4/2002 21 3.40

10/24/20022 7.30
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.015221193

R Square 0.000231685

Adjusted R Square -0.017945921

Standard Error 2.806152112

Observations 57

ANOVA

df SS MS

Regression 1 0.100365194 0.100365194

Residual 55 433.0969323 7.874489678

Total 56 433.1972975

Coefficients Standard Error t Stat

Intercept 4.032686523 0.713080342 5.655304577

COD (mg/L) -0.000961711 0.008518522 -0.112896468

RESIDUAL OUTPUT

Observation Predicted Daily Min DO (mg/L) Residuals Standard Residuals

1 3.937477129 5.624122871 2.022349723

2 3.937477129 4.345922871 1.56272829

3 3.93843884 1.83006116 0.65806238

4 3.869195645 3.575904355 1.28584125

5 4.013452302 3.091347698 1.111601987

6 3.884583022 -0.365383022 -0.131386221

7 3.924974886 -0.264674886 -0.095173095

8 3.93843884 -0.49393884 -0.177612954

9 3.97498386 -0.37278386 -0.134047451

10 3.951902795 -2.067802795 -0.743550685

11 3.973060438 -1.126160438 -0.404950301

12 3.973060438 1.729039562 0.621736537

13 3.911510931 0.454289069 0.163355495

14 4.01152888 2.98537112 1.073494409

15 3.999026636 3.329873364 1.197372218

16 3.957673061 4.26837137 1.53484194

17 3.966328461 2.432971539 0.874859855

18 3.94709424 2.09530576 0.753440336

19 3.961519906 5.782680094 2.079364508

20 3.958634772 4.590365228 1.650626073

21 3.966328461 3.262971539 1.173315331

22 3.992294659 1.917305341 0.689434071

23 3.988447815 1.290352185 0.463991176

24 3.955749639 0.675650361 0.242953675

25 3.8740042 -2.4713042 -0.888643701

26 3.949979373 1.280020627 0.460276104

27 3.95671135 1.69328865 0.608881049
28 4.008643747 2.761356253 0.992942043

29 3.941323974 4.078676026 1.466630357

30 3.969213594 0.390786406 0.140520895

31 3.890353288 -0.640353288 -0.23026138

32 3.911510931 -1.251510931 -0.450024447

33 3.932668574 -3.792668574 -1.363786393

34 3.975945571 -0.465945571 -0.167546997

35 3.973060438 -0.633060438 -0.227638981

36 3.966328461 -2.286328461 -0.822129217

37 3.967290172 -3.547290172 -1.275552022

38 3.975945571 -3.755945571 -1.350581355

39 3.888429866 -3.748429866 -1.347878821

40 3.971137016 -3.841137016 -1.381214913

41 3.889391577 -3.749391577 -1.348224637

42 3.909587509 -3.579587509 -1.287165657

43 3.918242908 -2.168242908 -0.779667434

44 4.003835192 -3.143835192 -1.130475698

45 3.978830704 0.981169296 0.352813674

46 4.016337435 -0.776337435 -0.279159228

47 4.010567169 -3.740567169 -1.345051513

48 4.021145991 -0.951145991 -0.342017747

49 4.000950059 -2.760950059 -0.992795982

50 3.986524393 -2.096524393 -0.753878538

51 4.00191177 -3.01191177 -1.083038026

52 4.021145991 -2.631145991 -0.946120397

53 4.027877968 -2.777877968 -0.998883002

54 4.004796903 -2.344796903 -0.843153586

55 4.026916257 -2.266916257 -0.815148881

56 4.012490591 -0.612490591 -0.220242375

57 4.030763101 3.269236899 1.17556826
F Significance F

0.012745612 0.910523702

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

5.75945E-07 2.603641935 5.461731112 2.603641935 5.461731112

0.910523702 -0.018033206 0.016109784 -0.018033206 0.016109784

PROBABILITY OUTPUT

Percentile Daily Min DO (mg/L)

0.877192982 0.13

2.631578947 0.14

4.385964912 0.14

6.140350877 0.14

7.894736842 0.22

9.649122807 0.27

11.40350877 0.33

13.15789474 0.42

14.9122807 0.86

16.66666667 0.99

18.42105263 1.24

20.1754386 1.25

21.92982456 1.39

23.68421053 1.4027

25.43859649 1.66

27.19298246 1.68

28.94736842 1.75

30.70175439 1.76

32.45614035 1.8841

34.21052632 1.89

35.96491228 2.66

37.71929825 2.8469

39.47368421 3.07

41.22807018 3.24

42.98245614 3.25

44.73684211 3.34

46.49122807 3.4

-5

0

5

10

0
48.24561404 3.4445

50 3.51

51.75438596 3.5192

53.50877193 3.6022

55.26315789 3.6603

57.01754386 4.36

58.77192982 4.3658

60.52631579 4.6314

62.28070175 4.96

64.03508772 5.23

65.78947368 5.2788

67.54385965 5.65

69.29824561 5.7021

71.05263158 5.7685

72.80701754 5.9096

74.56140351 6.0424

76.31578947 6.3993

78.07017544 6.77

79.8245614 6.9969

81.57894737 7.1048

83.33333333 7.2293

85.0877193 7.3

86.84210526 7.3289

88.59649123 7.4451

90.35087719 8.02

92.10526316 8.226044431

93.85964912 8.2834

95.61403509 8.549

97.36842105 9.5616

99.12280702 9.7442
50 100 150 200

COD (mg/L) Residual Plot

0

5

10

15

0 100 200

COD (mg/L) Line Fit Plot

Daily Min DO 

(mg/L)

Predicted Daily 

Min DO (mg/L)

0

5

10

15

0 20 40 60 80 100 120

Normal Probability Plot
Date COD (mg/L) Daily Min DO (mg/L)

1/25/2002 325 3.83

1/26/2002 414 5.31

1/29/2002 226 4.06

3/22/2002 342 2.37

3/23/2002 230 0.52

4/9/2002 292 0.26

5/1/2002 277 0.54

5/2/2002 217 6.45

5/3/2002 219 0.14

10/27/2002 284 5.34

10/31/2002 500 10.81
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.636230557

R Square 0.404789321

Adjusted R Square 0.338654802

Standard Error 2.694823698

Observations 11

ANOVA

df SS MS F

Regression 1 44.44895529 44.44895529 6.120696459

Residual 9 65.35867287 7.262074763

Total 10 109.8076282

Coefficients Standard Error t Stat P-value

Intercept -3.52438752 2.993228615 -1.177453504 0.269212445

COD (mg/L) 0.023571636 0.009527727 2.474004135 0.035337362

RESIDUAL OUTPUT

Observation Predicted Daily Min DO (mg/L) Residuals Standard Residuals

1 4.136394315 -0.310094315 -0.121294803

2 6.234269956 -0.922269956 -0.360750091

3 1.80280231 2.25589769 0.882404648

4 4.537112134 -2.163312134 -0.846189386

5 1.897088856 -1.374188856 -0.537520225

6 3.358530314 -3.101230314 -1.213060351

7 3.004955767 -2.464955767 -0.964178666

8 1.590657582 4.859342418 1.900753901

9 1.637800855 -1.497800855 -0.585871621

10 3.169957222 2.170042778 0.848822108

11 8.261430688 2.548569312 0.996884485
Significance F

0.035337362

Lower 95% Upper 95% Lower 95.0% Upper 95.0%

-10.29554623 3.246771192 -10.29554623 3.246771192

0.002018404 0.045124869 0.002018404 0.045124869

PROBABILITY OUTPUT

Percentile Daily Min DO (mg/L)

4.545454545 0.14

13.63636364 0.2573

22.72727273 0.5229

31.81818182 0.54

40.90909091 2.3738

50 3.8263

59.09090909 4.0587

68.18181818 5.312

77.27272727 5.34

86.36363636 6.45

95.45454545 10.81

-4

-2

0

2

4

6

0 100

COD 

0

5

10

15

0
200 300 400 500 600

D (mg/L) Residual Plot

200 400 600

COD (mg/L) Line Fit Plot

Daily Min DO 

(mg/L)

Predicted Daily 

Min DO (mg/L)

0

5

10

15

0 20 40 60 80 100 120

Normal Probability Plot
Date COD (mg/L) Daily Average DO (mg/L)

11/27/2001 99 10.38

11/28/2001 99 9.57

11/29/2001 98 8.32

11/30/2001 170 9.02

1/24/2002 20 9.68

1/25/2002 325 7.13

1/26/2002 414 8.78

1/29/2002 226 6.45

1/30/2002 154 6.26

1/31/2002 112 5.75

2/1/2002 98 6.23

2/2/2002 60 6.01

2/3/2002 84 5.31

2/4/2002 62 6.43

2/5/2002 62 7.59

3/22/2002 342 5.39

3/23/2002 230 4.09

3/24/2002 126 5.20

3/28/2002 22 9.05

3/29/2002 35 9.24

3/30/2002 78 9.69

3/31/2002 69 9.20

4/1/2002 89 8.72

4/2/2002 74 10.89

4/3/2002 77 9.97

4/4/2002 69 9.60

4/5/2002 42 8.84

4/6/2002 46 8.16

4/7/2002 80 7.73

4/8/2002 165 5.62

4/9/2002 292 3.32

4/18/2002 86 7.78

4/19/2002 79 8.49

4/20/2002 25 9.10

4/21/2002 95 9.14

4/22/2002 66 8.50

4/23/2002 148 7.20

4/24/2002 126 6.89

4/25/2002 104 6.20

4/26/2002 59 6.59

4/27/2002 62 6.72

4/28/2002 69 6.71

4/29/2002 68 5.78

4/30/2002 59 5.51

5/1/2002 277 6.93

5/2/2002 217 8.29

5/3/2002 219 6.64

5/4/2002 150 4.28

5/5/2002 64 4.46

5/6/2002 149 4.40

5/7/2002 128 4.36
5/8/2002 119 6.51

7/1/2002 30 3.79

7/8/2002 56 6.26

7/11/2002 17 4.58

7/18/2002 23 1.66

8/8/2002 12 5.04

8/12/2002 33 4.58

8/15/2002 48 4.67

8/26/2002 32 3.56

8/29/2002 12 3.84

9/6/20025 4.71

9/9/2002 29 4.59

9/12/20026 5.42

10/4/2002 21 6.74

10/24/20022 9.71

10/27/2002 284 7.98

10/31/2002 500 11.58
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.131705253

R Square 0.017346274

Adjusted R Square 0.002457581

Standard Error 2.126546365

Observations 68

ANOVA

df SS MS

Regression 1 5.268649869 5.268649869

Residual 66 298.4651632 4.522199442

Total 67 303.7338131

Coefficients Standard Error t Stat

Intercept 6.561724496 0.381040648 17.22053678

COD (mg/L) 0.002783085 0.002578408 1.079381109

RESIDUAL OUTPUT

Observation Predicted Daily Average DO (mg/L) Residuals Standard Residuals

1 6.837249948 3.547001094 1.680551787

2 6.837249948 2.732390677 1.294593352

3 6.834466863 1.483948762 0.703087673

4 7.03484901 1.986818699 0.941344991

5 6.617386203 3.060251607 1.449932258

6 7.466227243 -0.337910576 -0.16010038

7 7.713921841 1.064144902 0.504186655

8 7.190701791 -0.737836842 -0.349583491

9 6.990319644 -0.726240477 -0.344089189

10 6.873430058 -1.124815474 -0.532932076

11 6.834466863 -0.608169988 -0.288147968

12 6.728709618 -0.718645035 -0.340490506

13 6.795503667 -1.487826584 -0.704924966

14 6.734275789 -0.307049747 -0.14547867

15 6.734275789 0.851747637 0.403553868

16 7.513539694 -2.125888653 -1.007235656

17 7.201834132 -3.111922674 -1.474413757

18 6.912393253 -1.714604711 -0.812371334

19 6.622952374 2.424843 1.148878765

20 6.659132484 2.581370681 1.223040816

21 6.778805155 2.907179812 1.37740759

22 6.753757387 2.441471174 1.156757113

23 6.809419094 1.907254142 0.903647693

24 6.767672814 4.12525701 1.954526614

25 6.77602207 3.195267952 1.513902343

26 6.753757387 2.841994219 1.346522974

27 6.678614082 2.157168209 1.022055757
28 6.689746423 1.468915948 0.695965199

29 6.784371326 0.941362433 0.446012921

30 7.020933583 -1.396711446 -0.661755058

31 7.374385425 -4.050259016 -1.918992931

32 6.801069838 0.977003389 0.462899432

33 6.78158824 1.707099149 0.808815236

34 6.63130163 2.467713637 1.169190663

35 6.826117606 2.311870301 1.095352852

36 6.745408131 1.758788167 0.83330524

37 6.973621131 0.228124155 0.10808411

38 6.912393253 -0.022852416 -0.010827363

39 6.851165375 -0.646828206 -0.306464043

40 6.725926533 -0.139079198 -0.065895045

41 6.734275789 -0.013836471 -0.006555653

42 6.753757387 -0.040546774 -0.019210864

43 6.750974301 -0.969899348 -0.459533572

44 6.725926533 -1.214907811 -0.575617385

45 7.332639145 -0.406025098 -0.192372707

46 7.165654022 1.121790613 0.531498911

47 7.171220193 -0.533586407 -0.252810632

48 6.979187302 -2.695531589 -1.277129696

49 6.73984196 -2.27541986 -1.078082811

50 6.976404217 -2.574713071 -1.219886473

51 6.917959424 -2.556411026 -1.211215053

52 6.892911655 -0.378717515 -0.179434508

53 6.645217057 -2.858223323 -1.354212244

54 6.717577277 -0.456781967 -0.216421064

55 6.609036947 -2.02862028 -0.961150377

56 6.625735459 -4.963860459 -2.351852831

57 6.59512152 -1.55262152 -0.73562449

58 6.653566313 -2.073697876 -0.982507921

59 6.695312594 -2.025500256 -0.959672124

60 6.650783228 -3.089842281 -1.463952175

61 6.59512152 -2.755536222 -1.305559598

62 6.575639923 -1.862286096 -0.882342053

63 6.642433972 -2.056159943 -0.974198534

64 6.578423008 -1.163325249 -0.551177819

65 6.620169289 0.120545697 0.057113962

66 6.567290666 3.143251314 1.489257114

67 7.352120742 0.626108424 0.296647112

68 7.953267184 3.622008682 1.716090016
F Significance F

1.165063579 0.284346712

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

4.15604E-26 5.800952571 7.322496421 5.800952571 7.322496421

0.284346712 -0.002364871 0.007931042 -0.002364871 0.007931042

PROBABILITY OUTPUT

Percentile Daily Average DO (mg/L)

0.735294118 1.661875

2.205882353 3.324126409

3.676470588 3.560940947

5.147058824 3.786993734

6.617647059 3.839585298

8.088235294 4.089911458

9.558823529 4.283655713

11.02941176 4.361548398

12.5 4.401691145

13.97058824 4.4644221

15.44117647 4.579868437

16.91176471 4.580416667

18.38235294 4.586274029

19.85294118 4.669812337

21.32352941 4.713353827

22.79411765 5.0425

24.26470588 5.197788542

25.73529412 5.307677083

27.20588235 5.387651042

28.67647059 5.415097759

30.14705882 5.511018722

31.61764706 5.624222137

33.08823529 5.748614583

34.55882353 5.781074953

36.02941176 6.010064583

37.5 6.204337169

38.97058824 6.226296875
40.44117647 6.260795309

41.91176471 6.264079167

43.38235294 6.427226042

44.85294118 6.452864948

46.32352941 6.514194141

47.79411765 6.586847334

49.26470588 6.637633786

50.73529412 6.713210612

52.20588235 6.720439318

53.67647059 6.740714985

55.14705882 6.889540837

56.61764706 6.926614047

58.08823529 7.128316667

59.55882353 7.201745287

61.02941176 7.586023426

62.5 7.725733759

63.97058824 7.778073227

65.44117647 7.978229167

66.91176471 8.158662371

68.38235294 8.287444635

69.85294118 8.318415625

71.32352941 8.48868739

72.79411765 8.504196298

74.26470588 8.716673237

75.73529412 8.778066744

77.20588235 8.835782291

78.67647059 9.021667708

80.14705882 9.047795374

81.61764706 9.099015267

83.08823529 9.137987908

84.55882353 9.195228561

86.02941176 9.240503165

87.5 9.569640625

88.97058824 9.595751606

90.44117647 9.677637811

91.91176471 9.685984967

93.38235294 9.71054198

94.85294118 9.971290021

96.32352941 10.38425104

97.79411765 10.89292982

99.26470588 11.57527587
-6

-4

-2

0

2

4

6

0 200 400 600

COD (mg/L) Residual Plot

0

5

10

15

0 200 400 600

COD (mg/L) Line Fit Plot

Daily Average DO 

(mg/L)

Predicted Daily 

Average DO (mg/L)

0

5

10

15

0 20 40 60 80 100 120

Normal Probability Plot
Date COD (mg/L) Daily Average DO (mg/L)

11/27/2001 99 10.38

11/28/2001 99 9.57

11/29/2001 98 8.32

11/30/2001 170 9.02

1/24/2002 20 9.68

1/30/2002 154 6.26

1/31/2002 112 5.75

2/1/2002 98 6.23

2/2/2002 60 6.01

2/3/2002 84 5.31

2/4/2002 62 6.43

2/5/2002 62 7.59

3/24/2002 126 5.20

3/28/2002 22 9.05

3/29/2002 35 9.24

3/30/2002 78 9.69

3/31/2002 69 9.20

4/1/2002 89 8.72

4/2/2002 74 10.89

4/3/2002 77 9.97

4/4/2002 69 9.60

4/5/2002 42 8.84

4/6/2002 46 8.16

4/7/2002 80 7.73

4/8/2002 165 5.62

4/18/2002 86 7.78

4/19/2002 79 8.49

4/20/2002 25 9.10

4/21/2002 95 9.14

4/22/2002 66 8.50

4/23/2002 148 7.20

4/24/2002 126 6.89

4/25/2002 104 6.20

4/26/2002 59 6.59

4/27/2002 62 6.72

4/28/2002 69 6.71

4/29/2002 68 5.78

4/30/2002 59 5.51

5/4/2002 150 4.28

5/5/2002 64 4.46

5/6/2002 149 4.40

5/7/2002 128 4.36

5/8/2002 119 6.51

7/1/2002 30 3.79

7/8/2002 56 6.26

7/11/2002 17 4.58

7/18/2002 23 1.66

8/8/2002 12 5.04

8/12/2002 33 4.58

8/15/2002 48 4.67

8/26/2002 32 3.56
8/29/2002 12 3.84

9/6/20025 4.71

9/9/2002 29 4.59

9/12/20026 5.42

10/4/2002 21 6.74

10/24/20022 9.71
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.078939976

R Square 0.00623152

Adjusted R Square -0.011836998

Standard Error 2.13336376

Observations 57

ANOVA

df SS MS

Regression 1 1.569644414 1.569644414

Residual 55 250.3182513 4.551240933

Total 56 251.8878957

Coefficients Standard Error t Stat

Intercept 6.574273774 0.542115929 12.12706253

COD (mg/L) 0.00380324 0.006476166 0.587267174

RESIDUAL OUTPUT

Observation Predicted Daily Average DO (mg/L) Residuals Standard Residuals

1 6.950794489 3.433456552 1.623974896

2 6.950794489 2.618846136 1.238676044

3 6.94699125 1.371424375 0.648663737

4 7.220824497 1.800843211 0.851772586

5 6.650338565 3.027299246 1.431868411

6 7.159972665 -0.895893498 -0.423744564

7 7.000236603 -1.25162202 -0.591998969

8 6.94699125 -0.720694375 -0.340877933

9 6.802468147 -0.792403563 -0.374795334

10 6.893745896 -1.586068813 -0.750187427

11 6.810074626 -0.382848584 -0.181081799

12 6.810074626 0.7759488 0.36701247

13 7.053481957 -1.855693415 -0.877715933

14 6.657945044 2.38985033 1.130364367

15 6.707387158 2.533116007 1.198126943

16 6.870926459 2.815058509 1.331481636

17 6.836697303 2.358531258 1.115550902

18 6.912762094 1.803911143 0.853223673

19 6.8557135 4.037216323 1.909544466

20 6.867123219 3.104166802 1.468225645

21 6.836697303 2.759054303 1.304992464

22 6.734009835 2.101772456 0.994107732

23 6.749222793 1.409439578 0.666644374

24 6.878532938 0.847200821 0.400713638

25 7.2018083 -1.577586163 -0.746175257

26 6.901352375 0.876720852 0.414676182

27 6.874729698 1.613957692 0.76337846
28 6.669354762 2.429660505 1.149193999

29 6.935581531 2.202406377 1.041706109

30 6.825287584 1.678908714 0.794099346

31 7.137153227 0.06459206 0.030551103

32 7.053481957 -0.16394112 -0.07754176

33 6.969810687 -0.765473518 -0.362057815

34 6.798664907 -0.211817573 -0.100186624

35 6.810074626 -0.089635308 -0.042396194

36 6.836697303 -0.12348669 -0.058407404

37 6.832894063 -1.05181911 -0.497495105

38 6.798664907 -1.287646185 -0.609037874

39 7.144759706 -2.861103993 -1.353260479

40 6.817681105 -2.353259005 -1.113057203

41 7.140956467 -2.739265321 -1.295632564

42 7.061088436 -2.699540039 -1.276843084

43 7.02685928 -0.51266514 -0.242483137

44 6.68837096 -2.901377226 -1.372309131

45 6.787255189 -0.526459879 -0.249007848

46 6.638928846 -2.058512179 -0.973646252

47 6.661748283 -4.999873283 -2.364867174

48 6.619912648 -1.577412648 -0.746093187

49 6.699780679 -2.119912241 -1.002687586

50 6.756829272 -2.087016935 -0.987128585

51 6.695977439 -3.135036493 -1.482826558

52 6.619912648 -2.78032735 -1.315054305

53 6.593289971 -1.879936145 -0.889182391

54 6.684567721 -2.098293692 -0.992462327

55 6.597093211 -1.181995452 -0.559066618

56 6.654141804 0.086573181 0.040947853

57 6.581880253 3.128661727 1.479811387
F Significance F

0.344882734 0.559427536

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

3.58839E-17 5.487849441 7.660698107 5.487849441 7.660698107

0.559427536 -0.009175283 0.016781763 -0.009175283 0.016781763

PROBABILITY OUTPUT

Percentile Daily Average DO (mg/L)

0.877192982 1.661875

2.631578947 3.560940947

4.385964912 3.786993734

6.140350877 3.839585298

7.894736842 4.283655713

9.649122807 4.361548398

11.40350877 4.401691145

13.15789474 4.4644221

14.9122807 4.579868437

16.66666667 4.580416667

18.42105263 4.586274029

20.1754386 4.669812337

21.92982456 4.713353827

23.68421053 5.0425

25.43859649 5.197788542

27.19298246 5.307677083

28.94736842 5.415097759

30.70175439 5.511018722

32.45614035 5.624222137

34.21052632 5.748614583

35.96491228 5.781074953

37.71929825 6.010064583

39.47368421 6.204337169

41.22807018 6.226296875

42.98245614 6.260795309

44.73684211 6.264079167

46.49122807 6.427226042
48.24561404 6.514194141

50 6.586847334

51.75438596 6.713210612

53.50877193 6.720439318

55.26315789 6.740714985

57.01754386 6.889540837

58.77192982 7.201745287

60.52631579 7.586023426

62.28070175 7.725733759

64.03508772 7.778073227

65.78947368 8.158662371

67.54385965 8.318415625

69.29824561 8.48868739

71.05263158 8.504196298

72.80701754 8.716673237

74.56140351 8.835782291

76.31578947 9.021667708

78.07017544 9.047795374

79.8245614 9.099015267

81.57894737 9.137987908

83.33333333 9.195228561

85.0877193 9.240503165

86.84210526 9.569640625

88.59649123 9.595751606

90.35087719 9.677637811

92.10526316 9.685984967

93.85964912 9.71054198

95.61403509 9.971290021

97.36842105 10.38425104

99.12280702 10.89292982
-6

-4

-2

0

2

4

6

0 50 100 150 200

COD (mg/L) Residual Plot

0

5

10

15

0 100 200

COD (mg/L) Line Fit Plot

Daily Average DO 

(mg/L)

Predicted Daily 

Average DO (mg/L)

0

5

10

15

0 20 40 60 80 100 120

Normal Probability Plot
Date COD (mg/L) Daily Average DO (mg/L)

1/25/2002 325 7.13

1/26/2002 414 8.78

1/29/2002 226 6.45

3/22/2002 342 5.39

3/23/2002 230 4.09

4/9/2002 292 3.32

5/1/2002 277 6.93

5/2/2002 217 8.29

5/3/2002 219 6.64

10/27/2002 284 7.98

10/31/2002 500 11.58
SUMMARY OUTPUT

Regression Statistics

Multiple R 0.607811015

R Square 0.36943423

Adjusted R Square 0.299371367

Standard Error 1.90367834

Observations 11

ANOVA

df SS MS

Regression 1 19.10893081 19.10893081

Residual 9 32.61592098 3.62399122

Total 10 51.72485179

Coefficients Standard Error t Stat

Intercept 2.287440127 2.11447765 1.081799151

COD (mg/L) 0.01545529 0.006730581 2.296278849

RESIDUAL OUTPUT

Observation Predicted Daily Average DO (mg/L) Residuals Standard Residuals

1 7.310409263 -0.182092596 -0.100827144

2 8.685930041 0.092136702 0.051017343

3 5.780335588 0.672529361 0.372388642

4 7.573149187 -2.185498145 -1.210140008

5 5.842156746 -1.752245288 -0.970242016

6 6.800384704 -3.476258295 -1.924851435

7 6.56855536 0.358058687 0.198261958

8 5.641237981 2.646206654 1.465240567

9 5.67214856 0.965485226 0.534602283

10 6.676742387 1.301486779 0.720650907

11 10.01508495 1.560190915 0.863898901
F Significance F

5.272896551 0.047286421

P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

0.307474186 -2.49584428 7.070724534 -2.49584428 7.070724534

0.047286421 0.000229647 0.030680932 0.000229647 0.030680932

PROBABILITY OUTPUT

Percentile Daily Average DO (mg/L)

4.545454545 3.324126409

13.63636364 4.089911458

22.72727273 5.387651042

31.81818182 6.452864948

40.90909091 6.637633786

50 6.926614047

59.09090909 7.128316667

68.18181818 7.978229167

77.27272727 8.287444635

86.36363636 8.778066744

95.45454545 11.57527587
-4

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Residuals

COD (mg/L)

COD (mg/L) Residual Plot

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COD (mg/L) Line Fit Plot

Daily Average DO 

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Predicted Daily 

Average DO (mg/L)

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Normal Probability Plot