297_4xCO2   297_4xCO2_to_PI_yr200
    0       2.26      1.73
    1      12.74     32.46
    2       1.17     -0.69
    3      20.12     35.35
    4       0.92     -0.57
    5      13.06     23.02
    6       1.23     -0.64
    7      16.15     35.54
    8       1.61     -0.83
    9      23.16     41.05
   10       0.91     -0.75
   11      15.91     26.25
   12      37.79     36.45