1pctCO2   piControl
    0       1.75      1.50
    1      11.42     24.60
    2       0.58     -0.46
    3      18.67     26.25
    4       0.41     -0.31
    5      11.99     15.51
    6       0.61     -0.44
    7      17.69     25.37
    8       0.86     -0.60
    9      21.80     31.11
   10       0.41     -0.50
   11      14.91     16.09
   12      38.88     41.47