Statistics of sunspot activity
December, 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 | 86.50 | 77.00 | 83.00 | 79.80 | 76.25 | 59.50 | 83.50 | 76.60 | 66.67 | 65.17 | 49.33 | 21.83 | 22.00 | 29.50 | 18.60 | 29.25 | 39.80 | 40.00 | 27.40 | 38.67 | 46.25 | 59.67 | 72.50 | 104.50 | 98.75 | 89.40 | 90.00 | 81.17 | 115.50 | 100.40 | 128.17 | 66.34 | 100 |
| Wn | 33.00 | 32.60 | 16.80 | 14.00 | 8.25 | 0.00 | 0.00 | 0.00 | 15.00 | 13.00 | 3.67 | 0.00 | 0.00 | 19.50 | 14.20 | 29.25 | 37.20 | 40.00 | 25.20 | 38.67 | 43.25 | 59.67 | 72.50 | 98.75 | 93.25 | 82.60 | 79.00 | 75.33 | 99.25 | 81.20 | 86.67 | 39.09 | 58.92 |
| Ws | 53.50 | 44.40 | 66.20 | 65.80 | 68.00 | 59.50 | 83.50 | 76.60 | 51.67 | 52.17 | 45.67 | 21.83 | 22.00 | 10.00 | 4.40 | 0.00 | 2.60 | 0.00 | 2.20 | 0.00 | 3.00 | 0.00 | 0.00 | 5.75 | 5.50 | 6.80 | 11.00 | 5.83 | 16.25 | 19.20 | 41.50 | 27.25 | 41.08 |
| n | 4.33 | 3.60 | 5.20 | 5.00 | 4.25 | 2.67 | 3.33 | 3.00 | 4.00 | 4.67 | 3.33 | 1.83 | 2.00 | 2.50 | 1.60 | 2.00 | 2.80 | 3.17 | 2.20 | 3.00 | 3.25 | 3.00 | 3.00 | 3.75 | 2.75 | 2.60 | 3.33 | 3.83 | 5.00 | 4.80 | 5.67 | 3.40 | 100 |
| A | 0.33 | 0.40 | 1.80 | 1.00 | 0.25 | 0.17 | 0.17 | 0.00 | 1.67 | 2.17 | 1.33 | 0.83 | 1.33 | 1.00 | 0.40 | 0.00 | 0.80 | 1.33 | 1.20 | 0.00 | 0.25 | 0.00 | 0.00 | 1.00 | 0.75 | 0.60 | 1.00 | 0.17 | 0.00 | 0.00 | 0.33 | 0.65 | 19.23 |
| B | 0.67 | 0.60 | 0.00 | 0.00 | 0.50 | 0.33 | 0.17 | 0.20 | 0.33 | 0.17 | 0.00 | 0.00 | 0.00 | 0.25 | 0.20 | 0.25 | 0.00 | 0.67 | 0.00 | 0.17 | 0.00 | 0.17 | 0.00 | 0.25 | 0.25 | 0.20 | 0.00 | 0.50 | 0.25 | 0.00 | 0.17 | 0.20 | 5.96 |
| C | 0.67 | 0.40 | 1.20 | 2.60 | 1.00 | 0.50 | 1.17 | 0.80 | 1.67 | 1.17 | 1.33 | 0.50 | 0.00 | 0.25 | 0.20 | 0.75 | 1.20 | 0.50 | 0.80 | 1.17 | 0.75 | 0.33 | 0.25 | 0.25 | 0.00 | 0.20 | 0.33 | 0.83 | 0.75 | 0.40 | 0.17 | 0.71 | 20.99 |
| D | 1.83 | 1.20 | 0.60 | 0.80 | 1.25 | 1.33 | 1.67 | 1.60 | 0.33 | 0.83 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.40 | 0.00 | 0.00 | 0.33 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.50 | 1.50 | 1.20 | 1.83 | 0.61 | 17.90 |
| E | 0.17 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.17 | 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 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.07 | 2.04 |
| 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 | 0.17 | 0.50 | 1.00 | 0.75 | 1.00 | 1.00 | 0.50 | 1.00 | 1.00 | 0.83 | 0.25 | 7.35 |
| G | 0.33 | 0.80 | 1.40 | 0.40 | 0.25 | 0.33 | 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 | 0.50 | 0.67 | 0.50 | 0.00 | 0.25 | 0.00 | 0.00 | 0.33 | 0.25 | 1.20 | 0.50 | 0.25 | 7.47 |
| 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 | 0.33 | 0.20 | 0.20 | 0.20 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.50 | 0.67 | 1.00 | 0.80 | 0.50 | 0.40 | 0.67 | 0.20 | 1.17 | 1.25 | 1.50 | 1.75 | 1.25 | 0.75 | 0.60 | 0.67 | 1.00 | 1.25 | 1.00 | 0.83 | 0.65 | 19.06 |
| x | 1.00 | 1.00 | 1.80 | 1.00 | 0.75 | 0.50 | 0.33 | 0.20 | 2.00 | 2.33 | 1.33 | 0.83 | 1.33 | 1.25 | 0.60 | 0.25 | 0.80 | 2.00 | 1.20 | 0.17 | 0.25 | 0.17 | 0.00 | 1.25 | 1.00 | 0.80 | 1.00 | 0.67 | 0.25 | 0.00 | 0.50 | 0.86 | 25.19 |
| r | 0.50 | 0.40 | 0.20 | 0.20 | 0.00 | 0.17 | 0.17 | 0.20 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.17 | 0.50 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.20 | 0.17 | 0.15 | 4.41 |
| s | 0.50 | 1.00 | 0.80 | 2.40 | 2.50 | 1.33 | 1.00 | 0.20 | 0.00 | 0.67 | 1.00 | 0.83 | 0.33 | 1.00 | 0.60 | 1.25 | 1.00 | 1.00 | 0.80 | 2.50 | 2.75 | 1.17 | 1.50 | 1.25 | 0.50 | 0.80 | 1.00 | 2.33 | 1.00 | 1.60 | 1.17 | 1.15 | 33.93 |
| a | 1.83 | 1.20 | 2.20 | 1.40 | 1.00 | 0.67 | 1.83 | 2.40 | 2.00 | 1.50 | 1.00 | 0.17 | 0.33 | 0.25 | 0.20 | 0.25 | 1.00 | 0.17 | 0.20 | 0.17 | 0.25 | 1.17 | 0.50 | 0.25 | 0.50 | 0.20 | 0.33 | 0.50 | 2.00 | 1.00 | 1.17 | 0.89 | 26.20 |
| h | 0.33 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.51 |
| k | 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 | 0.00 | 0.00 | 0.33 | 0.50 | 0.50 | 0.75 | 0.80 | 1.00 | 0.33 | 1.25 | 2.00 | 2.67 | 0.33 | 9.77 |
| x | 0.67 | 0.60 | 2.00 | 1.20 | 1.00 | 0.17 | 0.17 | 0.00 | 1.67 | 2.50 | 1.67 | 1.33 | 2.00 | 2.00 | 1.20 | 0.50 | 1.20 | 2.00 | 1.40 | 1.17 | 1.50 | 1.50 | 1.75 | 2.25 | 1.50 | 1.20 | 1.67 | 1.17 | 1.25 | 1.00 | 1.17 | 1.30 | 38.29 |
| o | 3.33 | 3.00 | 3.00 | 3.80 | 2.50 | 1.83 | 2.17 | 2.40 | 2.33 | 2.17 | 1.67 | 0.50 | 0.00 | 0.50 | 0.40 | 1.25 | 1.40 | 1.17 | 0.80 | 1.83 | 1.75 | 1.17 | 0.75 | 0.50 | 0.50 | 0.40 | 0.67 | 1.83 | 2.50 | 2.80 | 2.00 | 1.64 | 48.28 |
| i | 0.33 | 0.00 | 0.20 | 0.00 | 0.75 | 0.67 | 1.00 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.50 | 0.75 | 0.75 | 0.80 | 0.67 | 0.83 | 1.25 | 1.00 | 2.17 | 0.42 | 12.37 |
| c | 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 | 0.25 | 0.00 | 0.20 | 0.33 | 0.00 | 0.00 | 0.00 | 0.33 | 0.04 | 1.06 |
| CV | 68.17 | 49.20 | 60.60 | 54.80 | 59.25 | 43.33 | 49.67 | 47.00 | 22.00 | 32.50 | 23.67 | 10.83 | 7.00 | 13.50 | 9.20 | 24.00 | 25.60 | 14.33 | 11.40 | 35.50 | 45.50 | 46.17 | 52.25 | 52.75 | 49.25 | 54.20 | 68.67 | 60.50 | 105.75 | 137.00 | 168.17 | 48.44 | 100 |
| CVn | 29.50 | 22.00 | 21.80 | 12.00 | 7.50 | 0.00 | 0.00 | 0.00 | 1.67 | 3.17 | 0.33 | 0.00 | 0.00 | 10.75 | 8.80 | 24.00 | 25.40 | 14.33 | 11.20 | 35.50 | 45.25 | 46.17 | 52.25 | 52.25 | 48.75 | 53.60 | 67.67 | 56.83 | 92.25 | 108.00 | 120.17 | 31.33 | 64.67 |
| CVs | 38.67 | 27.20 | 38.80 | 42.80 | 51.75 | 43.33 | 49.67 | 47.00 | 20.33 | 29.33 | 23.33 | 10.83 | 7.00 | 2.75 | 0.40 | 0.00 | 0.20 | 0.00 | 0.20 | 0.00 | 0.25 | 0.00 | 0.00 | 0.50 | 0.50 | 0.60 | 1.00 | 3.67 | 13.50 | 29.00 | 48.00 | 17.12 | 35.33 |
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