abrupt4xCO2   piControl
    0      15.18     14.47
    1      13.21     17.46
    2       5.36      3.79
    3      17.27     22.53
    4       5.21      3.61
    5      14.69     24.88
    6       6.98      3.98
    7      22.62     32.42
    8       4.78      3.70
    9      22.87     25.39
   10       4.11      3.53
   11      16.36     19.20
   12      59.30     59.32