Stanford Mean Solar Magnetic Field (microTesla)

       1980                                                                               

        Jan.   Feb.  March  April   May    June   July   Aug.   Sept.  Oct.   Nov.   Dec. 
 day
  01    -37     94      .    -10     -7     37    -51     -5    -19     44    -41    -82
  02    -28     96      .    -26      9     13      .      .      5     59    -94      .
  03      1     87     50    -21     26    -16    -25      8      8     53   -120      .
  04      .     72     53      .     55    -45    -23      7     29     26   -123   -100
  05      .     72     12    -44     21    -57    -19     10     42     -4   -111    -97

  06      .     57     -1    -17    -13    -42      .     24     42    -36    -84    -67
  07     54     49      1      9    -34    -25      8     53     23    -62    -99    -16
  08     59     31     -8      4    -42    -11     11     53      9    -73   -107     41
  09      .     10      .      7      .     -1     13     44    -27    -72    -61     71
  10      .      0      9      7    -17     -6     23     37    -68    -39     28     77

  11      .     10     21      5      .    -18     44     27    -77    -41     27     57
  12      .     11      1      2      .     -4     42      8    -84    -45     38     28
  13      .      3     -7    -15      .     12     34    -37    -62    -10     26      3
  14      .      .      .    -18      5     56      .    -63      .     10     -1    -52
  15      .      .     -2    -12      5     54     57    -65    -39     38    -21    -93

  16      .      .    -10    -14     -1      .     26    -56    -16     20    -50    -86
  17      .      .     -9     -8     16     63    -42    -44      7    -15    -68    -51
  18    -17      5     -8    -10     50     71    -69    -24      .     -8    -81     26
  19     -8    -13    -18     -5     73     55    -43      1    -18     -2    -63     37
  20     33      3    -42      .     78     15      5     23    -38    -16    -24     39

  21     32     -7    -41     30     92    -40     32     24    -31    -14      .      .
  22     10      .    -39     95    120    -43     47     11    -15    -17      .     51
  23      3    -32    -24    113    122     -1     53    -11     -7     -8     97     41
  24    -12      .    -20    113     46     33     57    -31    -22     31     80     28
  25    -25      .     13    100     14     49     53    -38    -21      .     70      7

  26    -31      6     43     56     25     37     27    -27      8     54     31    -13
  27      .     43     53      8     64     46     -8    -27     18     52     28    -20
  28    -34     58     64    -27     57     54    -33    -18     18     48     -3    -42
  29    -26     57     84    -28     62      6    -42    -14     18     44    -26    -65
  30    -13            75    -16     49    -22    -29    -18     25     57      .    -88
  31     29            25            49            -6    -10             .           -95