igrf10s 
  8  6371.2 2015.0
   1  0     11.4     0.0
   1  1     16.7   -28.8
   2  0    -11.3     0.0
   2  1     -3.9   -23.0
   2  2      2.7   -12.9
   3  0      1.3     0.0
   3  1     -3.9     8.6
   3  2     -2.9    -2.9
   3  3     -8.1    -2.1
   4  0     -1.4     0.0
   4  1      2.0     0.4
   4  2     -8.9     3.2
   4  3      4.4     3.6
   4  4     -2.3    -0.8
   5  0     -0.5     0.0
   5  1      0.5     0.5
   5  2     -1.5     1.5
   5  3     -0.7     0.9
   5  4      1.3     3.7
   5  5      1.4    -0.6
   6  0     -0.3     0.0
   6  1     -0.3    -0.1
   6  2     -0.3    -2.1
   6  3      1.9    -0.4
   6  4     -1.6    -0.5
   6  5     -0.2     0.8
   6  6      1.8     0.5
   7  0      0.2     0.0
   7  1     -0.1     0.6
   7  2     -0.6     0.3
   7  3      1.4    -0.2
   7  4      0.3    -0.1
   7  5      0.1    -0.8
   7  6     -0.8    -0.3
   7  7      0.4     0.2
   8  0     -0.1     0.0
   8  1      0.1     0.0
   8  2     -0.5     0.2
   8  3      0.3     0.5
   8  4     -0.3     0.4
   8  5      0.3     0.1
   8  6      0.2    -0.1
   8  7     -0.5     0.4
   8  8      0.2     0.4