Stanford Mean Solar Magnetic Field (microTesla)

       1998                                                                               

        Jan.   Feb.  March  April   May    June   July   Aug.   Sept.  Oct.   Nov.   Dec. 
 day
  01      .      .      .     26      .      .     -9     23     -2    -11     18     30
  02      .      .    -11     10     28    -72      6     28     12     33      9      .
  03      .      .      0      .      .      .      4     28      7     28     -3     15
  04     -9      .     -7      .      .      .      8     33     18     22     -1      .
  05    -11      .      .     13      .     10     21     17     28      4     -9    -24

  06    -28      .     -9      3      .      .     35      8     28     19      .    -14
  07      .      .      .    -16      .      .     37     -2     -1      7      .    -37
  08      .      .    -21    -30      .     89     15     -4    -11      3      .      .
  09      .      .     -1    -36      8     54      5    -28      .     -3    -39    -50
  10      .      .     -6     39     48      .     -5    -24      0      0      .    -22

  11      .      .    -14     39      .     51    -12    -16    -10     -8      .    -33
  12      .      .      .      .      .     11    -11    -24     -2    -29     -8     32
  13      4     36     -3     40      .    -11    -23     -1      0    -11      4     15
  14      .      .     13     64      .    -29     -2    -14      7     -4     56      6
  15      .     22      8     52      2    -28      3     -4      2     -9      .     24

  16      .      .     24     34     -9    -28     15     -5     -6      .      .     32
  17    -14      .     27     20    -20    -22     14     10      6     10     45     11
  18     12     11      6    -10    -25    -15      2      4     16     29     34    -10
  19      .      .     15    -20    -29     -4      .      1     23     26     11      4
  20      .    -22      .    -40      3     17     35      2     22     17    -28      .

  21    -12      .      .    -46    -17     16     17      6     28     18     -9    -14
  22     15    -34      .    -27     -1      5     18     13      .      0    -38      .
  23      .      .      .    -14     22     12     15     15      .    -54      .      .
  24     -9      1    -23     -9     19     11      4    -12      1      .      1      .
  25     26      .    -41     15     31      3      1     -6    -14    -20    -16      .

  26      .      .    -44     33     44     -9    -16     16      .    -31     44      .
  27      .     35      .     34      .     -6    -11      7      .     -1      .      .
  28      .     25     27     38      .    -14    -27      5    -11      .     47      .
  29     16             6     23      .    -24     -9      0      5      5      .      .
  30     19             5      4    -11    -21      .     -7    -28     10      .      .
  31     23             .           -22            16     -8            17             .