Spreadsheet: 130858d1322625060-matching-dates-and-returning-another-column-instructor-1-
Sheet: Sheet1

 |  |  |  | Instructor Sheet2 | Instructor Sheet3 | Total
 | 2012-01-16 00:00:00 | Period 1 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 2 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 3 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 4 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 5 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 6 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 7 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 8 |  | 9 |  | 9
 | 2012-01-16 00:00:00 | Period 9 |  | 9 |  | 9
 | 2012-01-17 00:00:00 | Period 1 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 2 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 3 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 4 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 5 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 6 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 7 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 8 |  | 18 |  | 18
 | 2012-01-17 00:00:00 | Period 9 |  | 18 |  | 18
 | 2012-01-18 00:00:00 | Period 1 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 2 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 3 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 4 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 5 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 6 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 7 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 8 |  | 27 |  | 27
 | 2012-01-18 00:00:00 | Period 9 |  | 27 |  | 27
 | 2012-01-19 00:00:00 | Period 1 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 2 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 3 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 4 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 5 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 6 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 7 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 8 |  | 36 | 9 | 45
 | 2012-01-19 00:00:00 | Period 9 |  | 36 | 9 | 45
 | 2012-01-20 00:00:00 | Period 1 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 2 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 3 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 4 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 5 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 6 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 7 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 8 |  | 45 | 18 | 63
 | 2012-01-20 00:00:00 | Period 9 |  | 45 | 18 | 63
 | 2012-01-21 00:00:00 | Period 1 |  | 1
 | 2012-01-21 00:00:00 | Period 2 |  | 1
 | 2012-01-21 00:00:00 | Period 3 |  | 1
 | 2012-01-21 00:00:00 | Period 4 |  | 1
 | 2012-01-21 00:00:00 | Period 5 |  | 1
 | 2012-01-21 00:00:00 | Period 6 |  | 1
 | 2012-01-21 00:00:00 | Period 7 |  | 1
 | 2012-01-21 00:00:00 | Period 8 |  | 1
 | 2012-01-21 00:00:00 | Period 9 |  | 1
 | 2012-01-22 00:00:00 | Period 1 |  | 2
 | 2012-01-22 00:00:00 | Period 2 |  | 2
 | 2012-01-22 00:00:00 | Period 3 |  | 2
 | 2012-01-22 00:00:00 | Period 4 |  | 2
 | 2012-01-22 00:00:00 | Period 5 |  | 2
 | 2012-01-22 00:00:00 | Period 6 |  | 2
 | 2012-01-22 00:00:00 | Period 7 |  | 2
 | 2012-01-22 00:00:00 | Period 8 |  | 2
 | 2012-01-22 00:00:00 | Period 9 |  | 2
 | 2012-01-23 00:00:00 | Period 1 |  | 1
 | 2012-01-23 00:00:00 | Period 2 |  | 1
 | 2012-01-23 00:00:00 | Period 3 |  | 1
 | 2012-01-23 00:00:00 | Period 4 |  | 1
 | 2012-01-23 00:00:00 | Period 5 |  | 1
 | 2012-01-23 00:00:00 | Period 6 |  | 1
 | 2012-01-23 00:00:00 | Period 7 |  | 1
 | 2012-01-23 00:00:00 | Period 8 |  | 1
 | 2012-01-23 00:00:00 | Period 9 |  | 1
 | 2012-01-24 00:00:00 | Period 1 |  | 2
 | 2012-01-24 00:00:00 | Period 2 |  | 2
 | 2012-01-24 00:00:00 | Period 3 |  | 2
 | 2012-01-24 00:00:00 | Period 4 |  | 2
 | 2012-01-24 00:00:00 | Period 5 |  | 2
 | 2012-01-24 00:00:00 | Period 6 |  | 2
 | 2012-01-24 00:00:00 | Period 7 |  | 2
 | 2012-01-24 00:00:00 | Period 8 |  | 2
 | 2012-01-24 00:00:00 | Period 9 |  | 2
 | 2012-01-25 00:00:00 | Period 1 |  | 1
 | 2012-01-25 00:00:00 | Period 2 |  | 1
 | 2012-01-25 00:00:00 | Period 3 |  | 1
 | 2012-01-25 00:00:00 | Period 4 |  | 1
 | 2012-01-25 00:00:00 | Period 5 |  | 1
 | 2012-01-25 00:00:00 | Period 6 |  | 1
 | 2012-01-25 00:00:00 | Period 7 |  | 1
 | 2012-01-25 00:00:00 | Period 8 |  | 1
 | 2012-01-25 00:00:00 | Period 9 |  | 1
 | 2012-01-26 00:00:00 | Period 1 |  | 1
 | 2012-01-26 00:00:00 | Period 2 |  | 1
 | 2012-01-26 00:00:00 | Period 3 |  | 1
 | 2012-01-26 00:00:00 | Period 4 |  | 1
 | 2012-01-26 00:00:00 | Period 5 |  | 1
 | 2012-01-26 00:00:00 | Period 6 |  | 1
 | 2012-01-26 00:00:00 | Period 7 |  | 1
 | 2012-01-26 00:00:00 | Period 8 |  | 1
 | 2012-01-26 00:00:00 | Period 9 |  | 1
 | 2012-01-27 00:00:00 | Period 1 |  | 2
 | 2012-01-27 00:00:00 | Period 2 |  | 2
 | 2012-01-27 00:00:00 | Period 3 |  | 2
 | 2012-01-27 00:00:00 | Period 4 |  | 2
 | 2012-01-27 00:00:00 | Period 5 |  | 2
 | 2012-01-27 00:00:00 | Period 6 |  | 2
 | 2012-01-27 00:00:00 | Period 7 |  | 2
 | 2012-01-27 00:00:00 | Period 8 |  | 2
 | 2012-01-27 00:00:00 | Period 9 |  | 2
 | 2012-01-28 00:00:00 | Period 1 |  | 1
 | 2012-01-28 00:00:00 | Period 2 |  | 1
 | 2012-01-28 00:00:00 | Period 3 |  | 1
 | 2012-01-28 00:00:00 | Period 1 |  | 1
 | 2012-01-28 00:00:00 | Period 2 |  | 1
 | 2012-01-28 00:00:00 | Period 3 |  | 1
 | 2012-01-28 00:00:00 | Period 4 |  | 1
 | 2012-01-28 00:00:00 | Period 5 |  | 1
 | 2012-01-28 00:00:00 | Period 6 |  | 1
 | 2012-01-29 00:00:00 | Period 7 |  | 2
 | 2012-01-29 00:00:00 | Period 8 |  | 2
 | 2012-01-29 00:00:00 | Period 9 |  | 2
 | 2012-01-29 00:00:00 | Period 1 |  | 2
 | 2012-01-29 00:00:00 | Period 2 |  | 2
 | 2012-01-29 00:00:00 | Period 3 |  | 2
 | 2012-01-29 00:00:00 | Period 4 |  | 2
 | 2012-01-29 00:00:00 | Period 5 |  | 2
 | 2012-01-29 00:00:00 | Period 6 |  | 2
 | 2012-01-30 00:00:00 | Period 7 |  | 1
 | 2012-01-30 00:00:00 | Period 8 |  | 1
 | 2012-01-30 00:00:00 | Period 9 |  | 1
 | 2012-01-30 00:00:00 | Period 1 |  | 1
 | 2012-01-30 00:00:00 | Period 2 |  | 1
 | 2012-01-30 00:00:00 | Period 3 |  | 1
 | 2012-01-30 00:00:00 | Period 4 |  | 1
 | 2012-01-30 00:00:00 | Period 5 |  | 1
 | 2012-01-30 00:00:00 | Period 6 |  | 1
 | 2012-01-31 00:00:00 | Period 7
 | 2012-01-31 00:00:00 | Period 8
 | 2012-01-31 00:00:00 | Period 9
 | 2012-01-31 00:00:00 | Period 1
 | 2012-01-31 00:00:00 | Period 2
 | 2012-01-31 00:00:00 | Period 3
 | 2012-01-31 00:00:00 | Period 4
 | 2012-01-31 00:00:00 | Period 5
 | 2012-01-31 00:00:00 | Period 6
 | 2012-02-01 00:00:00 | Period 7
 | 2012-02-01 00:00:00 | Period 8
 | 2012-02-01 00:00:00 | Period 9
 | 2012-02-01 00:00:00 | Period 1
 | 2012-02-01 00:00:00 | Period 2
 | 2012-02-01 00:00:00 | Period 3
 | 2012-02-01 00:00:00 | Period 1
 | 2012-02-01 00:00:00 | Period 2
 | 2012-02-01 00:00:00 | Period 3
 | 2012-02-02 00:00:00 | Period 4
 | 2012-02-02 00:00:00 | Period 5
 | 2012-02-02 00:00:00 | Period 6
 | 2012-02-02 00:00:00 | Period 7
 | 2012-02-02 00:00:00 | Period 8
 | 2012-02-02 00:00:00 | Period 9
 | 2012-02-02 00:00:00 | Period 1
 | 2012-02-02 00:00:00 | Period 2
 | 2012-02-02 00:00:00 | Period 3
 | 2012-02-03 00:00:00 | Period 4
 | 2012-02-03 00:00:00 | Period 5
 | 2012-02-03 00:00:00 | Period 6
 | 2012-02-03 00:00:00 | Period 7
 | 2012-02-03 00:00:00 | Period 8
 | 2012-02-03 00:00:00 | Period 9
 | 2012-02-03 00:00:00 | Period 1
 | 2012-02-03 00:00:00 | Period 2
 | 2012-02-03 00:00:00 | Period 3
 | 2012-02-04 00:00:00 | Period 4
 | 2012-02-04 00:00:00 | Period 5
 | 2012-02-04 00:00:00 | Period 6
 | 2012-02-04 00:00:00 | Period 7
 | 2012-02-04 00:00:00 | Period 8
 | 2012-02-04 00:00:00 | Period 9
 | 2012-02-04 00:00:00 | Period 1
 | 2012-02-04 00:00:00 | Period 2
 | 2012-02-04 00:00:00 | Period 3
 | 2012-02-05 00:00:00 | Period 4
 | 2012-02-05 00:00:00 | Period 5
 | 2012-02-05 00:00:00 | Period 6
 | 2012-02-05 00:00:00 | Period 7
 | 2012-02-05 00:00:00 | Period 8
 | 2012-02-05 00:00:00 | Period 9
 | 2012-02-05 00:00:00 | Period 1
 | 2012-02-05 00:00:00 | Period 2
 | 2012-02-05 00:00:00 | Period 3
 | 2012-02-06 00:00:00 | Period 1
 | 2012-02-06 00:00:00 | Period 2
 | 2012-02-06 00:00:00 | Period 3
 | 2012-02-06 00:00:00 | Period 4
 | 2012-02-06 00:00:00 | Period 5
 | 2012-02-06 00:00:00 | Period 6
 | 2012-02-06 00:00:00 | Period 7
 | 2012-02-06 00:00:00 | Period 8
 | 2012-02-06 00:00:00 | Period 9
 | 2012-02-07 00:00:00 | Period 1
 | 2012-02-07 00:00:00 | Period 2
 | 2012-02-07 00:00:00 | Period 3
 | 2012-02-07 00:00:00 | Period 4
 | 2012-02-07 00:00:00 | Period 5
 | 2012-02-07 00:00:00 | Period 6
 | 2012-02-07 00:00:00 | Period 7
 | 2012-02-07 00:00:00 | Period 8
 | 2012-02-07 00:00:00 | Period 9
 | 2012-02-08 00:00:00 | Period 1
 | 2012-02-08 00:00:00 | Period 2
 | 2012-02-08 00:00:00 | Period 3
 | 2012-02-08 00:00:00 | Period 4
 | 2012-02-08 00:00:00 | Period 5
 | 2012-02-08 00:00:00 | Period 6
 | 2012-02-08 00:00:00 | Period 7
 | 2012-02-08 00:00:00 | Period 8
 | 2012-02-08 00:00:00 | Period 9
 | 2012-02-09 00:00:00 | Period 1
 | 2012-02-09 00:00:00 | Period 2
 | 2012-02-09 00:00:00 | Period 3
 | 2012-02-09 00:00:00 | Period 4
 | 2012-02-09 00:00:00 | Period 5
 | 2012-02-09 00:00:00 | Period 6
 | 2012-02-09 00:00:00 | Period 7
 | 2012-02-09 00:00:00 | Period 8
 | 2012-02-09 00:00:00 | Period 9
 | 2012-02-10 00:00:00 | Period 1
 | 2012-02-10 00:00:00 | Period 2
 | 2012-02-10 00:00:00 | Period 3
 | 2012-02-10 00:00:00 | Period 1
 | 2012-02-10 00:00:00 | Period 2
 | 2012-02-10 00:00:00 | Period 3
 | 2012-02-10 00:00:00 | Period 4
 | 2012-02-10 00:00:00 | Period 5
 | 2012-02-10 00:00:00 | Period 6
 | 2012-02-11 00:00:00 | Period 7
 | 2012-02-11 00:00:00 | Period 8
 | 2012-02-11 00:00:00 | Period 9
 | 2012-02-11 00:00:00 | Period 1
 | 2012-02-11 00:00:00 | Period 2
 | 2012-02-11 00:00:00 | Period 3
 | 2012-02-11 00:00:00 | Period 4
 | 2012-02-11 00:00:00 | Period 5
 | 2012-02-11 00:00:00 | Period 6
 | 2012-02-12 00:00:00 | Period 7
 | 2012-02-12 00:00:00 | Period 8
 | 2012-02-12 00:00:00 | Period 9
 | 2012-02-12 00:00:00 | Period 1
 | 2012-02-12 00:00:00 | Period 2
 | 2012-02-12 00:00:00 | Period 3
 | 2012-02-12 00:00:00 | Period 4
 | 2012-02-12 00:00:00 | Period 5
 | 2012-02-12 00:00:00 | Period 6
 | 2012-02-13 00:00:00 | Period 7
 | 2012-02-13 00:00:00 | Period 8
 | 2012-02-13 00:00:00 | Period 9
 | 2012-02-13 00:00:00 | Period 1
 | 2012-02-13 00:00:00 | Period 2
 | 2012-02-13 00:00:00 | Period 3
 | 2012-02-13 00:00:00 | Period 4
 | 2012-02-13 00:00:00 | Period 5
 | 2012-02-13 00:00:00 | Period 6
 | 2012-02-14 00:00:00 | Period 7
 | 2012-02-14 00:00:00 | Period 8
 | 2012-02-14 00:00:00 | Period 9
 | 2012-02-14 00:00:00 | Period 1
 | 2012-02-14 00:00:00 | Period 2
 | 2012-02-14 00:00:00 | Period 3
 | 2012-02-14 00:00:00 | Period 1
 | 2012-02-14 00:00:00 | Period 2
 | 2012-02-14 00:00:00 | Period 3
 | 2012-02-15 00:00:00 | Period 4
 | 2012-02-15 00:00:00 | Period 5
 | 2012-02-15 00:00:00 | Period 6
 | 2012-02-15 00:00:00 | Period 7
 | 2012-02-15 00:00:00 | Period 8
 | 2012-02-15 00:00:00 | Period 9
 | 2012-02-15 00:00:00 | Period 1
 | 2012-02-15 00:00:00 | Period 2
 | 2012-02-15 00:00:00 | Period 3
 | 2012-02-16 00:00:00 | Period 4
 | 2012-02-16 00:00:00 | Period 5
 | 2012-02-16 00:00:00 | Period 6
 | 2012-02-16 00:00:00 | Period 7
 | 2012-02-16 00:00:00 | Period 8
 | 2012-02-16 00:00:00 | Period 9
 | 2012-02-16 00:00:00 | Period 1
 | 2012-02-16 00:00:00 | Period 2
 | 2012-02-16 00:00:00 | Period 3
 | 2012-02-17 00:00:00 | Period 4
 | 2012-02-17 00:00:00 | Period 5
 | 2012-02-17 00:00:00 | Period 6
 | 2012-02-17 00:00:00 | Period 7
 | 2012-02-17 00:00:00 | Period 8
 | 2012-02-17 00:00:00 | Period 9
 | 2012-02-17 00:00:00 | Period 1
 | 2012-02-17 00:00:00 | Period 2
 | 2012-02-17 00:00:00 | Period 3
 | 2012-02-18 00:00:00 | Period 4
 | 2012-02-18 00:00:00 | Period 5
 | 2012-02-18 00:00:00 | Period 6