Stanford Mean Solar Magnetic Field (microTesla)

       2018                                                                               

        Jan.   Feb.  March  April   May    June   July   Aug.   Sept.  Oct.   Nov.   Dec. 
 day
  01      5     -2      .      0    -13    -10      1     -7     -6      .     14     -3
  02      .      0      .      1    -18     -3     -4     -4     -7      6      8     -6
  03      .      0      3    -12    -16     -5     -6     -2     -7      .      3    -10
  04      9      1      4    -16    -15     -2     -2     -5      1     19     -9      .
  05      .      6      0      .      3     -2     -7    -11      4     11    -12      .

  06      4      3      1      .     -7    -15     -8    -16     18     10    -13    -12
  07      .      0     -9    -13     -1     -5     -5    -11     22      2      1     -4
  08      .    -10    -18    -11     -1     -7      2      0     20     -5     -8     -5
  09      .    -13    -10     -7     -3     -2    -10      5     12     -9     -6      5
  10      .    -14      .     -9     -8     -8    -13     10      3    -13     -5     11

  11    -11    -13    -11     19     -5     -5    -10     21     -8    -16      0     -9
  12     -4    -14    -11      1     -7     -1     -1     18    -14     -7      2     -1
  13     -6    -21      .      2    -12     -3      2      7    -12     -3      .     -4
  14      .     -7     -1     -6    -10     -5     12     -9    -15      1     -6      .
  15      .     -7      .     -7     -5      1     28    -18     -7      2     -5      .

  16      .     -7     -5     -6      1      5     18    -20     -5      8     -4      .
  17      .     -7    -23    -13      0      7      9    -22      0     -1     -3     -5
  18      .     -8     -5     -4     -1      4     -8    -20      6      1     -8     -4
  19     -9    -10    -11     -7     -2     13    -18    -12      3      0     -2      .
  20    -13    -13      .     -2      0      4    -21     -5      1      9     -4      .

  21     -3    -14      .     -6     -3     -8    -19     -4     -1     -1      .      .
  22      .    -11      .     -3     -2    -18    -21      3     -1     -1     -1      9
  23    -13     -9     -9      1      6    -23    -12      4      0     -2      .      9
  24      .    -10     -2     -6      .    -23     -6      1      1     -3     -8      .
  25     -9     -2     -3     -3      .    -20     -3     -5      2     -6      8     14

  26     -9     -2     -2      2     -8    -20     -5     -2      2     -4     13      6
  27     -4     -2     -5      2    -11    -11     -4     -4      0      0      .      0
  28     -3      .     -5      .    -21     -6     -2     -2      0      4      .     -3
  29      .            -3      3    -24     -5     -2      1     -8      9      .     -8
  30      3            -2    -13    -18     -2     -8      2     -4     18     -5    -10
  31     -2             0           -15            -3      3            20           -13