Stanford Mean Solar Magnetic Field (microTesla) 1989 Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec. day 01 . . . . . -5 4 -145 -58 -43 -111 -113 02 -19 . . -97 -47 -1 51 80 -46 . -125 -79 03 -22 . -66 -114 -31 -22 -19 121 -37 -87 -111 -46 04 -41 -65 . -86 -22 . 3 14 -37 -84 -75 -11 05 . -46 . -76 -22 2 71 -51 -46 -35 -11 43 06 -65 -4 . -62 . 56 69 -65 -30 -22 44 60 07 -85 -13 -10 -28 65 74 25 9 -5 -13 54 . 08 -101 . . -15 . 120 -90 145 22 -5 86 84 09 . . -58 25 . 145 -79 86 25 0 97 126 10 . -16 . 71 . 142 106 82 12 2 103 115 11 -16 -6 -16 101 . . 115 59 23 10 107 79 12 -23 -18 37 78 73 37 84 43 23 38 95 47 13 . 23 39 54 87 34 73 43 43 33 . 7 14 10 34 61 . 75 24 -55 55 44 26 13 -35 15 24 55 63 44 76 -58 22 57 25 31 . -59 16 23 73 40 11 73 -26 . 66 . 17 -70 -62 17 16 66 32 15 59 -91 -49 33 . 5 -79 . 18 74 . . 19 53 -6 6 2 -13 . -86 . 19 101 116 64 29 22 4 0 -10 -22 . -38 -4 20 120 131 73 27 -37 -67 -138 -20 -20 . 4 . 21 119 94 14 -21 -44 -18 -126 -35 -21 -88 . -32 22 -29 40 12 -68 -48 35 -57 -41 -26 0 . -70 23 . -13 . -6 -54 15 -25 -29 -31 . 17 -101 24 . -7 . -110 . -15 10 -15 -21 1 . -113 25 22 -35 -50 . -44 . -2 -13 -1 5 . . 26 -37 -64 . . -14 -24 -15 -15 -8 -19 -52 -103 27 . -108 . -80 -13 . -52 -7 -19 -56 -78 . 28 -50 -93 -110 -77 1 . -26 4 -16 -70 -76 -130 29 -64 -105 . 7 -30 -12 . -24 -100 -92 -108 30 -91 -106 -64 -12 . -44 3 -26 -110 -110 -106 31 -101 -100 -5 -144 -29 -104 -94