1850_250b   1850_227
    0       2.16      2.16
    1       8.32      6.37
    2      -0.14      0.20
    3      16.52     11.43
    4      -0.44      0.05
    5       8.84      6.72
    6      -0.29      0.00
    7       3.43      8.67
    8      -0.05      0.21
    9      11.15     14.46
   10       0.06      0.42
   11      19.12      7.87
   12      85.15     86.03