Statistics of sunspot activity
June, 1990
Visual indices of solar activity by National Geophysical Data Center
| Date | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | Average | % |
| W | 99.00 | 107.71 | 107.83 | 107.71 | 99.57 | 146.80 | 132.50 | 129.67 | 124.00 | 167.60 | 166.33 | 169.17 | 139.29 | 150.14 | 133.17 | 152.00 | 130.33 | 117.00 | 105.29 | 95.29 | 77.50 | 89.71 | 100.00 | 123.00 | 139.71 | 153.40 | 182.57 | 262.50 | 310.83 | 349.29 | 145.63 | 100 |
| Wn | 69.33 | 61.71 | 52.17 | 43.71 | 59.00 | 59.20 | 66.83 | 63.00 | 84.33 | 113.20 | 135.00 | 127.00 | 89.86 | 93.43 | 66.83 | 56.43 | 55.17 | 54.67 | 49.57 | 30.71 | 25.50 | 32.71 | 29.33 | 36.67 | 44.14 | 42.80 | 68.29 | 110.25 | 135.83 | 152.71 | 70.31 | 48.28 |
| Ws | 29.67 | 46.00 | 55.67 | 64.00 | 40.57 | 87.60 | 65.67 | 66.67 | 39.67 | 54.40 | 31.33 | 42.17 | 49.43 | 56.71 | 66.33 | 95.57 | 75.17 | 62.33 | 55.71 | 64.57 | 52.00 | 57.00 | 70.67 | 86.33 | 95.57 | 110.60 | 114.29 | 152.25 | 175.00 | 196.57 | 75.32 | 51.72 |
| n | 6.00 | 6.71 | 6.50 | 7.29 | 6.86 | 8.60 | 9.17 | 9.67 | 7.33 | 9.40 | 7.67 | 8.67 | 7.29 | 8.29 | 8.00 | 8.71 | 7.00 | 6.33 | 7.29 | 6.57 | 5.83 | 6.71 | 7.17 | 6.83 | 8.14 | 8.20 | 9.43 | 14.50 | 14.33 | 14.71 | 8.31 | 100 |
| A | 2.00 | 1.00 | 0.00 | 0.71 | 1.00 | 0.60 | 3.17 | 5.00 | 2.33 | 3.60 | 2.00 | 2.00 | 0.57 | 1.29 | 1.50 | 1.43 | 0.67 | 0.83 | 2.14 | 1.00 | 1.50 | 0.86 | 1.17 | 0.67 | 2.29 | 3.40 | 1.71 | 2.50 | 1.83 | 2.00 | 1.69 | 20.37 |
| B | 0.67 | 1.00 | 1.17 | 1.57 | 1.57 | 2.00 | 3.00 | 2.33 | 2.00 | 2.40 | 2.00 | 2.33 | 1.00 | 0.71 | 0.67 | 1.14 | 1.00 | 1.00 | 1.29 | 1.14 | 0.17 | 0.57 | 0.83 | 1.17 | 1.29 | 0.80 | 1.29 | 1.50 | 1.67 | 1.43 | 1.36 | 16.33 |
| C | 1.33 | 0.71 | 1.50 | 2.86 | 2.00 | 3.60 | 0.83 | 0.33 | 0.83 | 0.80 | 1.17 | 2.00 | 2.43 | 3.00 | 1.50 | 2.14 | 1.33 | 2.17 | 2.14 | 1.29 | 0.83 | 2.57 | 1.00 | 1.00 | 0.57 | 1.20 | 1.57 | 3.75 | 3.33 | 2.57 | 1.75 | 21.02 |
| D | 1.33 | 3.00 | 2.83 | 1.43 | 1.00 | 2.00 | 1.17 | 1.00 | 1.00 | 1.60 | 1.67 | 1.33 | 1.00 | 1.86 | 2.50 | 2.71 | 2.50 | 1.17 | 0.43 | 1.14 | 1.00 | 0.57 | 0.67 | 0.33 | 0.71 | 1.00 | 2.43 | 3.25 | 2.83 | 3.57 | 1.63 | 19.68 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.33 | 0.67 | 0.43 | 0.43 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.67 | 1.00 | 0.13 | 1.62 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.14 | 0.40 | 0.57 | 0.25 | 0.17 | 0.43 | 0.07 | 0.85 |
| G | 0.33 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.71 | 1.00 | 1.17 | 0.86 | 1.33 | 1.17 | 0.71 | 0.86 | 0.67 | 0.00 | 0.17 | 0.83 | 0.86 | 0.40 | 0.71 | 1.25 | 2.00 | 1.86 | 0.57 | 6.83 |
| H | 0.00 | 0.00 | 0.33 | 0.00 | 0.14 | 0.00 | 0.00 | 0.33 | 0.67 | 0.60 | 0.50 | 0.00 | 0.14 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.29 | 0.17 | 0.14 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.29 | 0.15 | 1.80 |
| I | 0.33 | 0.86 | 0.67 | 0.71 | 1.14 | 0.40 | 1.00 | 0.67 | 0.50 | 0.20 | 0.00 | 0.33 | 1.00 | 0.00 | 0.50 | 0.29 | 0.17 | 0.00 | 0.57 | 0.86 | 1.50 | 2.00 | 3.17 | 2.67 | 2.14 | 1.00 | 1.14 | 1.75 | 1.50 | 1.57 | 0.95 | 11.49 |
| x | 2.67 | 2.00 | 1.17 | 2.29 | 2.57 | 2.60 | 6.17 | 7.33 | 4.33 | 6.00 | 4.00 | 4.33 | 1.57 | 2.00 | 2.17 | 2.57 | 1.67 | 1.83 | 3.43 | 2.14 | 1.67 | 1.43 | 2.00 | 1.83 | 3.57 | 4.20 | 3.00 | 4.00 | 3.50 | 3.43 | 3.05 | 36.70 |
| r | 0.00 | 0.29 | 0.17 | 0.29 | 0.29 | 0.60 | 0.17 | 0.33 | 0.83 | 0.80 | 0.17 | 0.33 | 0.71 | 0.29 | 0.00 | 0.57 | 0.00 | 0.00 | 0.29 | 0.43 | 0.00 | 0.43 | 0.33 | 0.67 | 0.57 | 0.20 | 0.86 | 1.00 | 0.17 | 0.29 | 0.37 | 4.44 |
| s | 2.00 | 1.57 | 2.00 | 1.57 | 1.57 | 2.40 | 1.17 | 0.67 | 0.17 | 0.00 | 0.33 | 0.33 | 1.29 | 0.57 | 1.33 | 1.43 | 1.00 | 1.17 | 1.43 | 1.57 | 1.83 | 2.57 | 2.83 | 2.33 | 1.71 | 0.80 | 1.43 | 3.25 | 3.33 | 2.57 | 1.54 | 18.55 |
| a | 1.33 | 2.57 | 2.83 | 2.86 | 2.00 | 2.20 | 0.67 | 0.67 | 0.17 | 0.60 | 1.67 | 2.00 | 2.29 | 4.29 | 3.50 | 3.14 | 3.33 | 2.50 | 1.57 | 1.71 | 2.00 | 2.14 | 1.83 | 1.33 | 1.29 | 2.20 | 3.14 | 5.00 | 5.33 | 5.86 | 2.40 | 28.90 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.67 | 0.80 | 0.67 | 0.33 | 0.29 | 0.14 | 0.33 | 0.00 | 0.00 | 0.50 | 0.29 | 0.14 | 0.00 | 0.14 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.17 | 2.04 |
| k | 0.00 | 0.29 | 0.33 | 0.29 | 0.43 | 0.80 | 1.00 | 0.33 | 1.17 | 1.20 | 0.83 | 1.33 | 1.14 | 1.00 | 0.67 | 1.00 | 1.00 | 0.33 | 0.29 | 0.57 | 0.33 | 0.00 | 0.00 | 0.67 | 1.00 | 0.80 | 1.00 | 1.25 | 2.00 | 2.29 | 0.78 | 9.36 |
| x | 2.33 | 1.86 | 1.00 | 1.43 | 2.29 | 1.00 | 4.17 | 6.00 | 3.50 | 4.40 | 2.50 | 2.33 | 1.71 | 1.29 | 2.00 | 1.86 | 0.83 | 0.83 | 2.71 | 2.14 | 3.17 | 3.00 | 4.50 | 3.33 | 4.43 | 4.40 | 2.86 | 4.50 | 3.67 | 3.86 | 2.80 | 33.67 |
| o | 3.67 | 4.57 | 5.33 | 5.57 | 4.29 | 7.00 | 4.50 | 3.00 | 3.00 | 3.60 | 3.17 | 4.67 | 4.71 | 6.00 | 5.17 | 6.14 | 5.67 | 4.67 | 4.57 | 4.14 | 2.67 | 3.71 | 2.67 | 2.67 | 3.00 | 2.80 | 5.29 | 8.75 | 9.00 | 7.71 | 4.72 | 56.86 |
| i | 0.00 | 0.29 | 0.17 | 0.14 | 0.00 | 0.40 | 0.50 | 0.67 | 0.83 | 1.40 | 1.83 | 1.67 | 0.86 | 1.00 | 0.83 | 0.71 | 0.50 | 0.83 | 0.00 | 0.29 | 0.00 | 0.00 | 0.00 | 0.83 | 0.71 | 1.00 | 1.29 | 1.25 | 1.67 | 2.86 | 0.75 | 9.04 |
| c | 0.00 | 0.00 | 0.00 | 0.14 | 0.29 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.04 | 0.43 |
| CV | 56.33 | 89.57 | 94.67 | 74.29 | 67.86 | 102.20 | 73.67 | 60.33 | 91.67 | 112.40 | 109.67 | 116.17 | 116.86 | 127.00 | 133.50 | 129.14 | 125.17 | 100.00 | 70.57 | 87.43 | 69.50 | 60.00 | 63.67 | 79.00 | 90.43 | 80.60 | 126.57 | 186.00 | 225.50 | 258.57 | 105.94 | 100 |
| CVn | 35.33 | 49.43 | 53.00 | 37.14 | 41.71 | 54.40 | 55.00 | 39.00 | 51.50 | 66.20 | 68.00 | 73.33 | 65.43 | 60.57 | 53.17 | 42.86 | 42.50 | 31.50 | 15.14 | 21.00 | 28.33 | 27.00 | 11.83 | 13.00 | 13.86 | 12.20 | 44.29 | 72.00 | 107.00 | 124.29 | 47.00 | 44.36 |
| CVs | 21.00 | 40.14 | 41.67 | 37.14 | 26.14 | 47.80 | 18.67 | 21.33 | 40.17 | 46.20 | 41.67 | 42.83 | 51.43 | 66.43 | 80.33 | 86.29 | 82.67 | 68.50 | 55.43 | 66.43 | 41.17 | 33.00 | 51.83 | 66.00 | 76.57 | 68.40 | 82.29 | 114.00 | 118.50 | 134.29 | 58.94 | 55.64 |
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