1850_4xCO2   1850_1xCO2
    0       4.42      2.54
    1      21.24     70.11
    2       3.78     -0.81
    3      23.50     75.19
    4       3.32     -1.46
    5      38.43     60.26
    6       3.42     -0.84
    7      27.47     71.22
    8       4.62     -0.06
    9      17.35     81.35
   10       3.60     -1.05
   11      24.78     73.92
   12      81.71     83.06