Statistics of sunspot activity
May, 1993
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 | 41.25 | 35.57 | 38.60 | 73.60 | 89.50 | 85.60 | 94.33 | 89.33 | 127.00 | 137.25 | 139.60 | 123.67 | 94.33 | 67.00 | 48.60 | 50.75 | 43.25 | 32.20 | 29.00 | 41.50 | 28.50 | 13.75 | 37.67 | 41.00 | 61.50 | 85.40 | 87.75 | 94.00 | 112.00 | 123.60 | 116.00 | 73.65 | 100 |
| Wn | 13.50 | 15.00 | 18.40 | 23.40 | 31.25 | 43.20 | 64.33 | 66.67 | 89.83 | 95.50 | 94.20 | 85.00 | 82.33 | 67.00 | 46.20 | 47.75 | 37.50 | 24.60 | 13.00 | 23.75 | 17.50 | 2.75 | 26.00 | 29.33 | 50.25 | 64.40 | 87.75 | 94.00 | 107.60 | 116.80 | 104.50 | 54.30 | 73.73 |
| Ws | 27.75 | 20.57 | 20.20 | 50.20 | 58.25 | 42.40 | 30.00 | 22.67 | 37.17 | 41.75 | 45.40 | 38.67 | 12.00 | 0.00 | 2.40 | 3.00 | 5.75 | 7.60 | 16.00 | 17.75 | 11.00 | 11.00 | 11.67 | 11.67 | 11.25 | 21.00 | 0.00 | 0.00 | 4.40 | 6.80 | 11.50 | 19.35 | 26.27 |
| n | 3.00 | 2.43 | 2.80 | 4.80 | 6.00 | 5.00 | 4.00 | 3.33 | 4.33 | 6.00 | 6.60 | 6.00 | 4.33 | 3.75 | 3.60 | 4.00 | 3.50 | 2.40 | 2.40 | 3.50 | 2.50 | 1.25 | 3.33 | 3.33 | 4.75 | 6.00 | 4.25 | 4.25 | 4.80 | 4.60 | 5.25 | 4.07 | 100 |
| A | 1.00 | 0.43 | 0.00 | 0.60 | 1.25 | 0.00 | 0.50 | 0.00 | 1.00 | 0.50 | 0.80 | 0.33 | 1.00 | 0.75 | 0.80 | 1.50 | 0.75 | 0.60 | 1.20 | 2.25 | 1.50 | 0.75 | 2.33 | 1.00 | 1.50 | 1.40 | 0.25 | 0.25 | 0.60 | 0.40 | 0.00 | 0.81 | 20.02 |
| B | 0.00 | 0.00 | 0.20 | 0.80 | 2.00 | 1.40 | 0.33 | 0.33 | 0.17 | 0.75 | 0.80 | 0.67 | 0.33 | 0.00 | 0.00 | 0.50 | 1.25 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 1.33 | 1.25 | 1.80 | 0.00 | 0.00 | 0.20 | 0.00 | 0.25 | 0.50 | 12.24 |
| C | 0.50 | 1.71 | 0.60 | 1.00 | 1.00 | 1.40 | 0.83 | 1.33 | 0.33 | 0.75 | 1.00 | 2.33 | 0.33 | 0.25 | 1.00 | 0.25 | 0.75 | 1.00 | 0.40 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.60 | 1.00 | 1.00 | 0.60 | 0.80 | 1.75 | 0.79 | 19.45 |
| D | 1.50 | 0.29 | 0.60 | 1.20 | 0.75 | 2.20 | 2.17 | 1.67 | 2.50 | 3.00 | 3.20 | 1.00 | 1.67 | 1.50 | 1.00 | 1.00 | 0.50 | 0.00 | 0.00 | 0.50 | 0.25 | 0.00 | 0.00 | 0.00 | 0.25 | 0.60 | 1.00 | 1.25 | 1.40 | 0.80 | 0.25 | 1.03 | 25.41 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.40 | 1.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.75 | 0.60 | 1.20 | 1.25 | 0.21 | 5.25 |
| F | 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 | 0.00 | 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 | 0.01 | 0.20 |
| G | 0.00 | 0.00 | 0.00 | 0.60 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 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 | 0.25 | 0.20 | 0.25 | 0.00 | 0.40 | 0.40 | 0.50 | 0.11 | 2.78 |
| 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 | 0.00 | 0.00 | 1.40 | 0.60 | 0.25 | 0.00 | 0.17 | 0.00 | 0.00 | 0.75 | 0.00 | 0.67 | 0.67 | 1.00 | 0.80 | 0.75 | 0.25 | 0.40 | 0.80 | 0.50 | 0.75 | 0.50 | 0.33 | 1.00 | 0.75 | 0.40 | 1.50 | 1.00 | 1.00 | 1.00 | 1.25 | 0.60 | 14.66 |
| x | 1.00 | 0.43 | 0.20 | 1.40 | 3.25 | 1.40 | 0.83 | 0.33 | 1.17 | 1.25 | 1.60 | 1.00 | 1.33 | 0.75 | 0.80 | 2.00 | 2.00 | 1.00 | 1.20 | 2.25 | 1.50 | 0.75 | 3.00 | 2.33 | 2.75 | 3.20 | 0.25 | 0.25 | 0.80 | 0.40 | 0.25 | 1.31 | 32.26 |
| r | 0.00 | 0.14 | 0.40 | 0.00 | 0.00 | 0.40 | 0.50 | 0.00 | 0.17 | 0.75 | 0.20 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.00 | 0.75 | 0.25 | 0.33 | 0.67 | 1.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.50 | 0.23 | 5.74 |
| s | 1.50 | 1.29 | 1.40 | 1.20 | 0.00 | 0.20 | 0.67 | 0.67 | 0.83 | 2.00 | 1.40 | 0.33 | 0.00 | 1.25 | 1.80 | 1.00 | 0.75 | 0.40 | 0.40 | 0.25 | 0.25 | 0.00 | 0.00 | 0.33 | 0.75 | 1.40 | 2.50 | 1.75 | 0.60 | 0.60 | 2.00 | 0.89 | 21.82 |
| a | 0.50 | 0.57 | 0.80 | 2.20 | 2.75 | 2.40 | 1.33 | 2.00 | 1.17 | 1.00 | 2.40 | 4.33 | 3.00 | 1.75 | 1.00 | 1.00 | 0.75 | 0.80 | 0.60 | 1.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 1.40 | 1.50 | 2.25 | 3.20 | 3.40 | 2.25 | 1.47 | 36.17 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.32 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.67 | 0.33 | 1.00 | 1.00 | 0.80 | 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 | 0.20 | 0.00 | 0.25 | 0.15 | 3.69 |
| x | 1.00 | 0.43 | 1.40 | 1.20 | 1.50 | 0.00 | 0.67 | 0.00 | 1.00 | 1.25 | 0.80 | 1.00 | 1.67 | 1.75 | 1.60 | 2.25 | 1.00 | 1.00 | 2.00 | 2.75 | 2.25 | 1.25 | 2.67 | 2.00 | 2.25 | 1.80 | 1.75 | 1.25 | 1.60 | 1.40 | 1.25 | 1.41 | 34.68 |
| o | 2.00 | 2.00 | 1.40 | 3.40 | 4.00 | 3.60 | 1.83 | 1.00 | 1.33 | 3.00 | 3.80 | 3.00 | 1.00 | 1.25 | 2.00 | 1.75 | 2.50 | 1.40 | 0.40 | 0.75 | 0.25 | 0.00 | 0.67 | 1.33 | 2.50 | 4.20 | 1.50 | 1.25 | 1.80 | 1.40 | 2.75 | 1.91 | 46.84 |
| i | 0.00 | 0.00 | 0.00 | 0.20 | 0.50 | 1.20 | 0.67 | 2.33 | 1.00 | 1.25 | 2.00 | 2.00 | 1.67 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.75 | 1.40 | 1.80 | 1.25 | 0.67 | 16.47 |
| c | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.83 | 0.00 | 1.00 | 0.50 | 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 | 0.08 | 2.01 |
| CV | 41.00 | 23.86 | 30.60 | 55.20 | 46.25 | 75.80 | 79.17 | 59.67 | 101.17 | 116.50 | 123.80 | 70.00 | 52.33 | 50.00 | 40.60 | 32.50 | 22.75 | 12.80 | 10.60 | 18.00 | 10.75 | 3.50 | 5.00 | 9.67 | 23.50 | 40.80 | 60.00 | 66.75 | 71.40 | 68.80 | 78.75 | 48.44 | 100 |
| CVn | 20.00 | 12.29 | 13.20 | 19.80 | 26.00 | 53.40 | 67.00 | 49.67 | 78.67 | 78.50 | 82.60 | 53.00 | 51.00 | 50.00 | 40.40 | 32.25 | 22.00 | 12.00 | 8.60 | 16.50 | 9.00 | 0.25 | 2.67 | 4.33 | 21.00 | 38.20 | 60.00 | 66.75 | 71.00 | 67.40 | 70.00 | 38.63 | 79.75 |
| CVs | 21.00 | 11.57 | 17.40 | 35.40 | 20.25 | 22.40 | 12.17 | 10.00 | 22.50 | 38.00 | 41.20 | 17.00 | 1.33 | 0.00 | 0.20 | 0.25 | 0.75 | 0.80 | 2.00 | 1.50 | 1.75 | 3.25 | 2.33 | 5.33 | 2.50 | 2.60 | 0.00 | 0.00 | 0.40 | 1.40 | 8.75 | 9.81 | 20.25 |
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