Statistics of sunspot activity
May, 1992
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 | 31 | Average | % |
| W | 119.00 | 97.75 | 116.40 | 126.83 | 131.20 | 128.60 | 119.17 | 108.17 | 105.20 | 71.40 | 73.60 | 106.60 | 134.00 | 103.00 | 83.50 | 52.00 | 64.80 | 65.00 | 62.20 | 111.00 | 146.75 | 138.50 | 170.50 | 114.25 | 82.75 | 82.00 | 100.33 | 84.33 | 70.33 | 47.00 | 43.00 | 98.68 | 100 |
| Wn | 50.25 | 38.00 | 31.20 | 29.33 | 22.20 | 15.20 | 11.67 | 26.17 | 30.00 | 19.80 | 16.80 | 16.40 | 21.75 | 0.00 | 3.83 | 0.00 | 0.00 | 19.50 | 33.40 | 54.00 | 60.75 | 63.50 | 68.50 | 38.50 | 48.00 | 47.00 | 59.33 | 55.00 | 51.00 | 23.00 | 26.33 | 31.63 | 32.05 |
| Ws | 68.75 | 59.75 | 85.20 | 97.50 | 109.00 | 113.40 | 107.50 | 82.00 | 75.20 | 51.60 | 56.80 | 90.20 | 112.25 | 103.00 | 79.67 | 52.00 | 64.80 | 45.50 | 28.80 | 57.00 | 86.00 | 75.00 | 102.00 | 75.75 | 34.75 | 35.00 | 41.00 | 29.33 | 19.33 | 24.00 | 16.67 | 67.06 | 67.95 |
| n | 6.25 | 6.25 | 6.80 | 7.00 | 6.40 | 7.60 | 6.17 | 5.83 | 5.60 | 4.20 | 4.20 | 7.80 | 9.25 | 7.75 | 6.00 | 4.17 | 5.20 | 4.50 | 3.20 | 6.50 | 8.00 | 6.50 | 8.50 | 6.00 | 4.75 | 6.00 | 6.33 | 6.00 | 6.00 | 4.00 | 3.00 | 5.99 | 100 |
| A | 0.75 | 1.50 | 0.80 | 2.00 | 1.60 | 1.20 | 1.00 | 1.50 | 1.60 | 0.20 | 0.40 | 1.00 | 2.00 | 1.25 | 2.00 | 0.83 | 1.00 | 1.75 | 0.40 | 1.25 | 1.50 | 0.50 | 1.00 | 0.00 | 0.75 | 4.00 | 1.67 | 2.67 | 3.67 | 2.00 | 0.67 | 1.37 | 22.85 |
| B | 1.75 | 0.25 | 1.00 | 1.17 | 1.40 | 1.80 | 1.83 | 0.50 | 0.00 | 0.00 | 0.00 | 2.20 | 0.75 | 1.75 | 0.33 | 0.17 | 1.20 | 1.25 | 1.80 | 3.25 | 1.00 | 1.50 | 3.50 | 2.00 | 3.00 | 0.00 | 2.33 | 1.33 | 0.33 | 1.00 | 0.83 | 1.27 | 21.12 |
| C | 0.50 | 1.00 | 1.40 | 0.50 | 0.80 | 0.40 | 0.67 | 0.17 | 0.00 | 0.20 | 1.20 | 1.20 | 3.00 | 0.50 | 0.50 | 0.67 | 1.40 | 1.00 | 0.00 | 0.00 | 2.25 | 1.00 | 1.50 | 1.25 | 0.00 | 0.00 | 0.67 | 0.00 | 0.33 | 0.00 | 1.17 | 0.75 | 12.53 |
| D | 2.00 | 1.75 | 1.80 | 2.00 | 1.00 | 2.20 | 0.83 | 1.50 | 1.60 | 2.00 | 1.80 | 1.40 | 0.75 | 1.00 | 0.67 | 0.00 | 0.00 | 0.50 | 1.00 | 0.75 | 2.00 | 2.50 | 1.50 | 2.00 | 0.50 | 1.00 | 1.00 | 0.67 | 0.67 | 0.00 | 0.33 | 1.18 | 19.77 |
| E | 0.25 | 0.00 | 0.00 | 0.33 | 0.40 | 0.40 | 0.33 | 0.17 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.00 | 1.00 | 1.00 | 0.50 | 0.50 | 0.00 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.24 | 4.04 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| G | 0.00 | 0.50 | 0.80 | 0.17 | 0.60 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.40 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 1.70 |
| H | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| I | 1.00 | 1.25 | 1.00 | 0.83 | 0.60 | 1.60 | 1.50 | 2.00 | 2.00 | 1.80 | 0.80 | 1.60 | 2.75 | 3.00 | 2.50 | 2.50 | 1.60 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.00 | 1.00 | 0.33 | 1.00 | 1.00 | 1.00 | 0.00 | 1.08 | 17.99 |
| x | 2.50 | 1.75 | 1.80 | 3.17 | 3.00 | 3.00 | 2.83 | 2.00 | 1.60 | 0.20 | 0.40 | 3.20 | 2.75 | 3.00 | 2.33 | 1.00 | 2.20 | 3.00 | 2.20 | 4.50 | 2.50 | 2.00 | 4.50 | 2.00 | 3.75 | 4.00 | 4.00 | 4.00 | 4.00 | 3.00 | 1.50 | 2.63 | 43.97 |
| r | 0.00 | 0.25 | 0.00 | 0.17 | 0.20 | 0.20 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.33 | 1.00 | 0.75 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.25 | 0.00 | 1.00 | 1.00 | 0.33 | 0.67 | 0.00 | 0.17 | 0.27 | 4.48 |
| s | 1.25 | 0.50 | 2.00 | 0.67 | 0.40 | 2.00 | 1.67 | 1.33 | 1.20 | 1.40 | 1.60 | 3.80 | 3.25 | 3.50 | 2.17 | 2.33 | 1.20 | 0.50 | 0.20 | 0.50 | 1.25 | 0.50 | 0.50 | 0.75 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.50 | 0.17 | 1.15 | 19.27 |
| a | 2.50 | 3.75 | 3.00 | 3.00 | 2.60 | 2.20 | 1.17 | 2.33 | 2.80 | 2.60 | 2.20 | 0.80 | 3.00 | 1.00 | 1.50 | 0.50 | 0.80 | 0.25 | 0.40 | 0.50 | 2.25 | 3.00 | 2.50 | 2.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.67 | 0.50 | 1.17 | 1.60 | 26.73 |
| h | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.33 | 5.55 |
| x | 1.75 | 2.75 | 1.80 | 2.83 | 2.20 | 2.80 | 2.50 | 3.50 | 3.60 | 2.00 | 1.20 | 2.60 | 4.75 | 4.25 | 4.50 | 3.33 | 2.60 | 1.75 | 0.40 | 1.50 | 1.75 | 0.50 | 1.00 | 0.25 | 0.75 | 5.00 | 2.00 | 3.67 | 4.67 | 3.00 | 0.67 | 2.45 | 40.84 |
| o | 3.75 | 3.50 | 4.20 | 2.50 | 2.60 | 3.80 | 3.00 | 1.33 | 1.20 | 2.00 | 3.00 | 5.00 | 4.50 | 3.50 | 1.33 | 0.83 | 2.60 | 2.50 | 2.20 | 4.25 | 5.00 | 5.00 | 6.50 | 4.75 | 3.00 | 1.00 | 3.33 | 1.33 | 1.33 | 1.00 | 2.00 | 2.96 | 49.45 |
| i | 0.50 | 0.00 | 0.80 | 1.67 | 1.40 | 0.80 | 0.67 | 1.00 | 0.80 | 0.20 | 0.00 | 0.20 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.25 | 0.40 | 0.50 | 1.25 | 1.00 | 1.00 | 1.00 | 0.75 | 0.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.33 | 0.54 | 8.98 |
| c | 0.25 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.73 |
| CV | 68.00 | 62.75 | 82.00 | 68.33 | 65.60 | 85.20 | 48.50 | 60.67 | 60.60 | 57.80 | 55.80 | 77.00 | 70.75 | 66.75 | 44.33 | 30.00 | 26.40 | 20.50 | 37.40 | 74.50 | 110.50 | 107.50 | 97.00 | 93.75 | 55.50 | 51.00 | 63.67 | 58.67 | 33.67 | 12.50 | 18.33 | 60.16 | 100 |
| CVn | 20.00 | 14.50 | 16.40 | 13.83 | 6.00 | 1.80 | 1.67 | 15.50 | 19.80 | 20.20 | 16.40 | 22.80 | 12.00 | 0.00 | 0.33 | 0.00 | 0.00 | 8.00 | 33.40 | 65.00 | 64.25 | 62.00 | 48.50 | 46.50 | 51.00 | 48.00 | 52.33 | 53.33 | 28.67 | 2.00 | 7.50 | 24.25 | 40.31 |
| CVs | 48.00 | 48.25 | 65.60 | 54.50 | 59.60 | 83.40 | 46.83 | 45.17 | 40.80 | 37.60 | 39.40 | 54.20 | 58.75 | 66.75 | 44.00 | 30.00 | 26.40 | 12.50 | 4.00 | 9.50 | 46.25 | 45.50 | 48.50 | 47.25 | 4.50 | 3.00 | 11.33 | 5.33 | 5.00 | 10.50 | 10.83 | 35.91 | 59.69 |
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