*******************************************************************************
*** Historical CO2 Record from the Vostok Ice Core                          ***
***                                                                         ***
*** Source: J.M. Barnola                                                    ***
***         D. Raynaud                                                      ***
***         C. Lorius                                                       ***
***         Laboratoire de Glaciologie et de Geophysique de l'Environnement ***
***         38402 Saint Martin d'Heres Cedex, France                        ***
***                                                                         ***
***         N. I. Barkov                                                    ***
***         Arctic and Antarctic Research Institute                         ***
***         Beringa Street 38                                               ***
***         St. Petersburg 199226, Russia                                   ***
***                                                                         ***
*** August 1999                                                             ***
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                     Mean
           Age of   age of    CO2
 Depth     the ice  the air concentration
  (m)      (yr BP)  (yr BP)  (ppmv)

 149.10     5679     2342    284.7
 173.10     6828     3634    272.8
 177.40     7043     3833    268.1
 228.60     9523     6220    262.2
 250.30    10579     7327    254.6
 266.00    11334     8113    259.6
 302.60    13449    10123    261.6
 321.20    14538    11013    263.7
 331.60    15208    11326    244.8
 342.10    15922    11719    238.3
 365.50    17747    13405    236.2
 375.60    18580    13989    225.3
 443.50    24315    17695    182.2
 470.80    26578    19988    189.2
 506.40    29630    22977    191.6
 544.70    32844    26303    188.5
 554.20    33645    27062    191.7
 602.30    37421    31447    205.4
 625.60    39310    33884    209.1
 700.20    45242    39880    209.1
 765.00    50610    44766    189.3
 788.20    52446    47024    188.4
 800.00    53436    48229    210.1
 812.20    54474    49414    215.7
 834.80    56300    51174    190.4
 902.20    61783    57068    221.8
 912.00    62689    57799    210.4
 986.20    69618    63687    195.4
1011.30    71767    65701    191.4
1023.50    72797    66883    195.0
1087.20    78042    72849    227.4
1112.50    80057    75360    229.2
1162.10    83615    78995    217.1
1175.00    84515    80059    221.8
1209.90    86840    82858    231.0
1237.20    88808    84929    241.1
1251.50    89864    85727    236.4
1261.20    90609    86323    228.1
1274.20    91560    87180    214.2
1289.20    92632    88051    217.0
1309.20    94039    89363    208.0
1338.20    96047    91691    224.3
1349.00    96791    92460    228.4
1387.20    99498    95349    232.1
1451.50   103733    99842    225.9
1463.20   104566   100833    230.9
1476.10   105492   101829    236.9
1505.00   107599   103372    228.2
1526.30   109404   105213    236.9
1542.10   110674   106203    230.7
1575.20   113363   108308    238.2
1582.80   113952   108994    245.7
1598.00   115077   110253    251.3
1615.00   116228   111456    256.8
1627.90   117072   112577    266.3
1637.60   117671   113472    261.4
1644.00   118074   114082    274.6
1651.00   118499   114738    273.3
1669.20   119601   116175    262.5
1687.20   120680   117519    267.6
1700.90   121485   118396    273.8
1716.00   122345   119273    272.0
1726.80   122965   120002    265.2
1736.80   123535   120652    277.7
1758.20   124721   121961    272.2
1770.00   125380   122606    276.5
1789.20   126447   123815    268.7
1790.00   126491   123858    266.6
1799.00   126955   124306    266.3
1804.00   127210   124571    279.8
1810.00   127510   124876    277.2
1825.70   128293   125746    273.8
1830.00   128501   126023    267.1
1836.00   128804   126475    262.5
1841.60   129097   126809    262.6
1852.40   129674   127445    275.4
1869.30   130599   128300    274.1
1870.20   130653   128399    287.1
1875.90   130998   128652    286.8
1882.50   131406   129007    282.7
1890.00   131908   129411    264.1
1895.00   132264   129755    263.4
1903.50   132873   130167    259.0
1932.00   135308   131789    240.4
1954.50   137601   133334    224.0
1969.80   139285   134205    208.9
1980.20   140452   135003    204.6
1987.40   141257   135683    198.1
1990.60   141615   135976    201.8
1994.60   142064   136359    202.5
1998.00   142440   136659    195.9
2005.80   143315   137383    194.4
2009.50   143732   137694    193.4
2015.00   144346   138226    190.2
2025.70   145527   139445    192.3
2041.50   147292   141312    196.5
2050.30   148287   142357    190.4
2077.50   151234   145435    197.0
2116.00   155625   150303    191.9
2157.00   160293   154471    189.0
2164.00   161077   155299    185.5
2203.00   165646   160494    204.4
2225.00   168391   162996    191.6
2247.00   170922   165278    183.8
2280.00   174920   169870    197.9
2302.00   177644   172596    197.8
2325.00   180546   175440    190.3
2333.00   181502   176271    190.1
2348.00   183525   178550    207.7
2363.00   185640   180779    213.2
2372.00   186927   181617    217.7
2386.00   188892   183355    199.8
2399.00   190587   185063    203.5
2414.00   192382   187199    210.7
2425.00   193816   189335    231.4
2437.00   195298   191057    231.5
2451.00   197086   192632    218.0
2475.00   199904   195625    220.1
2499.00   202496   199025    242.6
2525.00   205458   202212    251.0
2533.00   206496   203191    239.1
2543.00   207803   204283    247.7
2552.01   208947   205148    244.4
2557.71   209648   205715    232.2
2560.91   210053   206119    228.7
2574.21   211628   207991    238.2
2584.71   212846   209414    242.2
2588.81   213315   210022    244.6
2595.11   214036   210830    247.3
2596.71   214219   211005    252.0
2606.61   215343   212281    257.4
2621.71   217099   214153    251.2
2629.41   217989   215041    241.4
2634.41   218602   215593    240.3
2636.71   218908   215879    242.7
2640.41   219393   216459    247.5
2644.41   219935   217009    251.7
2646.61   220255   217271    251.2
2650.41   220822   217676    245.4
2656.21   221718   218342    240.5
2666.71   223548   219680    212.2
2670.41   224240   220182    216.2
2674.61   224993   220760    207.2
2677.41   225469   221054    208.9
2682.61   226339   221612    205.7
2691.01   227885   222958    203.4
2693.61   228349   223446    215.7
2698.01   229167   224630    236.9
2701.41   229802   225299    234.5
2702.71   230039   225509    233.1
2705.61   230547   225888    224.5
2711.71   231601   226710    232.4
2715.41   232206   227384    233.9
2717.71   232571   227840    241.7
2732.71   234795   230703    245.2
2735.71   235232   231382    252.2
2738.71   235652   231990    241.4
2741.71   236077   232570    247.4
2744.61   236467   233102    243.1
2747.61   236866   233646    239.2
2751.11   237301   234126    245.7
2753.61   237602   234470    245.9
2756.21   237889   234781    247.4
2759.11   238206   235213    252.9
2765.21   238908   236236    259.8
2773.51   240006   237831    279.0
2782.71   241535   238935    263.8
2785.51   242092   239250    252.4
2788.51   242675   239545    249.9
2794.51   243813   240201    230.4
2797.51   244446   240577    219.4
2806.51   246379   242068    214.7
2815.61   248364   243653    200.2
2818.61   249046   244215    213.9
2821.51   249670   244863    195.4
2824.51   250309   245483    196.7
2833.81   252279   247447    199.0
2836.51   252879   248087    201.9
2839.51   253559   248980    204.0
2845.51   254873   250461    203.9
2851.51   256182   251521    209.7
2857.51   257604   252959    208.9
2860.51   258351   253880    214.7
2866.51   259882   255233    228.2
2870.51   260936   256053    199.9
2872.71   261526   256501    211.7
2876.21   262455   257247    188.7
2881.42   263844   258477    194.2
2884.51   264666   259228    198.9
2887.51   265457   259958    184.7
2890.51   266255   260754    190.4
2893.51   267039   261595    193.9
2896.51   267825   262411    194.2
2899.51   268558   263207    198.4
2902.51   269307   264046    193.2
2905.51   270052   264834    202.2
2911.46   271454   266492    211.0
2914.51   272171   267434    215.4
2919.41   273256   268679    223.7
2926.51   274802   270680    231.4
2935.51   276731   273012    226.4
2941.51   278017   274445    230.4
2944.51   278711   275218    231.0
2956.51   281740   277925    220.4
2959.51   282539   278602    217.2
2964.51   283810   279543    207.7
2973.81   286475   282301    212.7
2979.51   288013   283492    213.2
2988.61   290554   286217    224.4
2994.51   292121   287846    236.2
3003.51   294495   290571    240.2
3007.01   295477   291769    240.7
3009.51   296158   292474    250.2
3015.51   297810   293676    244.9
3018.51   298623   294615    225.9
3022.71   299716   295849    227.9
3027.51   300928   297131    233.2
3030.41   301665   298051    237.9
3033.51   302452   299020    239.0
3036.51   303201   299877    241.9
3039.51   303939   300646    251.7
3042.51   304745   301496    256.8
3045.51   305612   302456    257.2
3048.56   306561   303334    246.9
3051.51   307464   303953    272.7
3054.51   308358   304590    251.7
3057.71   309281   305306    244.7
3063.51   310905   307131    255.9
3066.51   311704   308101    249.2
3072.51   313292   310039    256.3
3075.41   314032   310930    260.4
3078.51   314822   311774    260.3
3084.51   316304   313493    266.3
3090.51   317775   315143    266.2
3093.51   318509   315940    270.2
3096.46   319231   316681    271.9
3099.51   319978   317445    275.2
3105.51   321448   318980    265.0
3109.01   322216   319754    271.8
3111.51   322746   320378    272.7
3114.81   323441   321386    273.2
3117.51   324021   322111    282.4
3119.51   324461   322582    289.2
3120.61   324711   322827    288.4
3123.51   325400   323485    298.7
3126.51   326200   324189    278.2
3129.91   327237   324991    285.8
3132.41   328058   325527    278.7
3135.51   329135   326239    270.5
3138.51   330278   327114    255.7
3141.51   331513   328097    241.9
3145.01   333111   329267    239.7
3147.51   334356   330208    234.2
3153.51   337304   332293    250.2
3156.51   338770   333627    200.7
3159.51   340242   335290    205.2
3162.81   341849   336972    204.9
3169.01   344844   340165    220.4
3174.51   347589   342998    221.2
3177.81   349298   344735    216.2
3183.41   352377   347610    209.2
3189.51   355795   350765    193.0
3192.51   357450   352412    186.2
3200.01   361445   356838    201.2
3204.71   363962   359688    206.4
3210.51   367048   362766    201.9
3216.45   370095   366221    214.7
3222.51   373629   369563    229.7
3228.91   377177   373014    227.0
3231.51   378469   374561    240.0
3237.51   381834   378194    246.9
3240.51   383395   379633    245.9
3249.51   388757   384909    264.7
3252.45   390641   386579    259.3
3258.51   394634   390589    255.2
3261.51   396423   392451    250.2
3264.51   398091   394628    266.3
3267.51   399733   396713    274.7
3273.81   403173   400390    278.0
3283.51   408236   405844    279.7
3289.45   411202   409022    283.7
3292.91   413010   410831    276.3
3299.01   416332   414085    285.5