Petit et al. Data
   Time(My)  CO2(ppm)
    .00234    284.697
    .00363    272.743
    .00383    268.061
    .00622    262.184
    .00733    254.514
    .00811    259.594
    .01012    261.586
    .01101    263.678
    .01133    244.751
    .01172    238.276
    .01341    236.185
    .01399    225.227
    .01770    182.194
    .01999    189.167
    .02298    191.557
    .02630    188.469
    .02706    191.657
    .03145    205.304
    .03388    209.090
    .03988    209.090
    .04477    189.266
    .04702    188.370
    .04823    210.086
    .04941    215.664
    .05117    190.362
    .05707    221.740
    .05780    210.385
    .06369    195.343
    .06570    191.358
    .06688    194.944
    .07285    227.319
    .07536    229.112
    .07900    217.059
    .08006    221.740
    .08286    230.905
    .08493    241.066
    .08573    236.384
    .08632    228.016
    .08718    214.170
    .08805    216.959
    .08936    207.994
    .09169    224.231
    .09246    228.315
    .09535    232.001
    .09984    225.825
    .10083    230.805
    .10183    236.882
    .10337    228.116
    .10521    236.882
    .10620    230.606
    .10831    238.177
    .10899    245.648
    .11025    251.226
    .11146    256.705
    .11258    266.268
    .11347    261.387
    .11408    274.530
    .11474    273.241
    .11618    262.483
    .11752    267.563
    .11840    273.739
    .11927    271.946
    .12000    265.172
    .12065    277.624
    .12196    272.145
    .12261    276.429
    .12382    268.659
    .12386    266.567
    .12431    266.268
    .12457    279.716
    .12488    277.126
    .12575    273.739
    .12602    267.065
    .12648    262.483
    .12681    262.582
    .12745    275.333
    .12836    274.038
    .12839    287.087
    .12865    286.788
    .12901    282.605
    .12941    264.076
    .12976    263.379
    .13017    258.996
    .13179    240.368
    .13333    223.932
    .13421    208.890
    .13500    204.507
    .13568    198.032
    .13598    201.718
    .13636    202.415
    .13666    195.841
    .13738    194.347
    .13769    193.351
    .13823    190.163
    .13945    192.255
    .14131    196.439
    .14236    190.362
    .14544    196.937
    .15030    191.856
    .15447    188.968
    .15530    185.481
    .16049    204.308
    .16300    191.557
    .16528    183.788
    .16987    197.833
    .17260    197.734
    .17544    190.262
    .17627    190.063
    .17855    207.695
    .18078    213.174
    .18162    217.656
    .18336    199.726
    .18506    203.412
    .18720    210.683
    .18934    231.303
    .19106    231.403
    .19263    217.955
    .19563    220.047
    .19903    242.560
    .20221    250.927
    .20319    239.073
    .20428    247.640
    .20515    244.400
    .20572    232.200
    .20612    228.600
    .20799    238.100
    .20941    242.200
    .21002    244.552
    .21083    247.242
    .21101    252.000
    .21228    257.400
    .21415    251.200
    .21588    242.600
    .21727    251.500
    .21834    240.500
    .21968    212.100
    .22076    207.100
    .22161    205.600
    .22296    203.300
    .22345    215.664
    .22463    236.900
    .22551    233.096
    .22589    224.500
    .22671    232.399
    .22784    241.600
    .23070    247.540
    .23138    258.600
    .23199    241.365
    .23257    247.500
    .23310    243.058
    .23365    239.100
    .23413    245.600
    .23447    245.800
    .23478    247.400
    .23521    251.700
    .23624    259.700
    .23783    279.000
    .23894    263.700
    .23955    249.900
    .24020    231.100
    .24207    214.700
    .24365    199.500
    .24548    196.700
    .25046    203.900
    .25152    209.600
    .25388    214.600
    .25605    199.900
    .25725    188.700
    .25848    194.200
    .26160    194.400
    .26483    202.200
    .26868    223.700
    .27301    226.400
    .27954    207.600
    .28349    213.100
    .28622    224.400
    .28785    235.000
    .29247    250.200
    .29462    225.800
    .29585    227.800
    .29805    237.800
    .29988    241.900
    .30065    251.600
    .30150    256.700
    .30395    272.600
    .30531    244.700
    .30810    249.200
    .31093    260.400
    .31349    272.600
    .31745    275.100
    .32139    273.100
    .32348    300.400
    .32499    285.800
    .32553    278.600
    .32711    255.700
    .32927    239.600
    .33021    234.200
    .33229    250.100
    .33529    204.900
    .33697    204.800
    .34017    220.300
    .34300    221.100
    .34473    216.200
    .34761    209.200
    .35077    193.000
    .35241    186.100
    .35684    201.200
    .35969    206.300
    .36277    201.900
    .36622    214.700
    .36956    229.600
    .37301    227.000
    .37456    240.000
    .37819    246.800
    .37963    245.800
    .38491    264.600
    .38658    259.200
    .39059    255.200
    .39463    266.300
    .39671    274.600
    .40039    278.000
    .40584    279.600
    .40902    283.600
    .41083    276.200
    .41409    285.500
    .42081    274.600
    .42652    274.600
    .42885    199.000
    .43065    229.700
    .43389    273.200
    .43718    274.000
    .44017    266.600
    .44294    276.500
    .44531    276.300
    .44776    278.000
    .45080    204.600
    .45338    205.900