1850_250   1850_227
    0       2.18      2.27
    1      15.60      8.13
    2      -0.05     -0.53
    3      21.99     14.62
    4      -0.42     -0.97
    5      10.48      5.81
    6      -0.16     -0.69
    7      20.44     10.77
    8       0.06     -0.33
    9      16.63     14.16
   10       0.17     -0.29
   11      11.11     16.79
   12      85.02     84.58