igrf2020                         
13 6371.20        2020.0
          1          0   -29404.8          0
          1          1    -1450.9     4652.5
          2          0    -2499.6          0
          2          1       2982    -2991.6
          2          2       1677     -734.6
          3          0     1363.2          0
          3          1    -2381.2      -82.1
          3          2     1236.2      241.9
          3          3      525.7     -543.4
          4          0        903          0
          4          1      809.5      281.9
          4          2       86.3     -158.4
          4          3     -309.4      199.7
          4          4         48     -349.7
          5          0     -234.3          0
          5          1      363.2       47.7
          5          2      187.8      208.3
          5          3     -140.7     -121.2
          5          4     -151.2       32.3
          5          5       13.5       98.9
          6          0         66          0
          6          1       65.5      -19.1
          6          2       72.9       25.1
          6          3     -121.5       52.8
          6          4      -36.2      -64.5
          6          5       13.5        8.9
          6          6      -64.7       68.1
          7          0       80.6          0
          7          1      -76.7      -51.5
          7          2       -8.2      -16.9
          7          3       56.5        2.2
          7          4       15.8       23.5
          7          5        6.4       -2.2
          7          6       -7.2      -27.2
          7          7        9.8       -1.8
          8          0       23.7          0
          8          1        9.7        8.4
          8          2      -17.6      -15.3
          8          3       -0.5       12.8
          8          4      -21.1      -11.7
          8          5       15.3       14.9
          8          6       13.7        3.6
          8          7      -16.5       -6.9
          8          8       -0.3        2.8
          9          0          5          0
          9          1        8.4      -23.4
          9          2        2.9         11
          9          3       -1.5        9.8
          9          4       -1.1       -5.1
          9          5      -13.2       -6.3
          9          6        1.1        7.8
          9          7        8.8        0.4
          9          8       -9.3       -1.4
          9          9      -11.9        9.6
         10          0       -1.9          0
         10          1       -6.2        3.4
         10          2       -0.1       -0.2
         10          3        1.7        3.6
         10          4       -0.9        4.8
         10          5        0.7       -8.6
         10          6       -0.9       -0.1
         10          7        1.9       -4.3
         10          8        1.4       -3.4
         10          9       -2.4       -0.1
         10         10       -3.8       -8.8
         11          0          3          0
         11          1       -1.4          0
         11          2       -2.5        2.5
         11          3        2.3       -0.6
         11          4       -0.9       -0.4
         11          5        0.3        0.6
         11          6       -0.7       -0.2
         11          7       -0.1       -1.7
         11          8        1.4       -1.6
         11          9       -0.6         -3
         11         10        0.2         -2
         11         11        3.1       -2.6
         12          0         -2          0
         12          1       -0.1       -1.2
         12          2        0.5        0.5
         12          3        1.3        1.4
         12          4       -1.2       -1.8
         12          5        0.7        0.1
         12          6        0.3        0.8
         12          7        0.5       -0.2
         12          8       -0.3        0.6
         12          9       -0.5        0.2
         12         10        0.1       -0.9
         12         11       -1.1          0
         12         12       -0.3        0.5
         13          0        0.1          0
         13          1       -0.9       -0.9
         13          2        0.5        0.6
         13          3        0.7        1.4
         13          4       -0.3       -0.4
         13          5        0.8       -1.3
         13          6          0       -0.1
         13          7        0.8        0.3
         13          8          0       -0.1
         13          9        0.4        0.5
         13         10        0.1        0.5
         13         11        0.5       -0.4
         13         12       -0.5       -0.4
         13         13       -0.4       -0.6