Statistics of sunspot activity
December, 2004
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 | 50.25 | 53.00 | 50.00 | 38.67 | 41.40 | 32.25 | 24.00 | 30.50 | 20.33 | 30.50 | 15.50 | 32.75 | 25.33 | 21.67 | 13.33 | 19.67 | 39.67 | 29.25 | 17.00 | 26.33 | 19.50 | 45.50 | 39.00 | 37.00 | 20.20 | 15.00 | 14.00 | 24.00 | 32.33 | 34.50 | 37.75 | 30.01 | 100 |
| Wn | 12.75 | 17.50 | 19.00 | 14.00 | 18.60 | 18.50 | 20.33 | 19.25 | 9.33 | 18.00 | 15.50 | 27.00 | 21.67 | 18.00 | 8.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 9.50 | 16.33 | 22.00 | 30.50 | 10.85 | 36.17 |
| Ws | 37.50 | 35.50 | 31.00 | 24.67 | 22.80 | 13.75 | 3.67 | 11.25 | 11.00 | 12.50 | 0.00 | 5.75 | 3.67 | 3.67 | 4.67 | 19.67 | 39.67 | 29.25 | 17.00 | 26.33 | 19.50 | 45.50 | 39.00 | 37.00 | 20.20 | 15.00 | 14.00 | 14.50 | 16.00 | 12.50 | 7.25 | 19.15 | 63.83 |
| n | 3.00 | 3.25 | 3.33 | 3.00 | 3.60 | 2.75 | 2.00 | 2.50 | 1.67 | 2.50 | 1.00 | 1.50 | 1.33 | 1.33 | 1.00 | 1.67 | 3.00 | 2.25 | 1.33 | 1.00 | 1.00 | 2.00 | 1.50 | 2.00 | 1.20 | 1.00 | 1.25 | 1.75 | 2.33 | 2.00 | 1.75 | 1.96 | 100 |
| A | 0.00 | 0.25 | 0.33 | 0.00 | 0.80 | 0.00 | 0.67 | 1.00 | 1.00 | 1.50 | 0.00 | 0.50 | 0.33 | 0.33 | 0.00 | 1.00 | 0.67 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.20 | 0.00 | 0.25 | 0.00 | 0.67 | 0.50 | 0.00 | 0.35 | 17.68 |
| B | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.33 | 0.25 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.50 | 0.25 | 0.13 | 6.55 |
| C | 1.25 | 0.50 | 1.33 | 1.67 | 0.20 | 0.25 | 0.00 | 0.25 | 0.33 | 0.00 | 0.25 | 0.25 | 0.00 | 0.33 | 0.33 | 0.33 | 0.33 | 0.50 | 0.33 | 0.67 | 0.50 | 0.50 | 0.00 | 0.60 | 0.60 | 0.00 | 0.25 | 0.50 | 0.00 | 0.00 | 0.50 | 0.41 | 20.67 |
| D | 0.50 | 1.25 | 1.00 | 0.33 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.75 | 0.75 | 1.00 | 0.67 | 0.33 | 0.33 | 0.33 | 0.50 | 0.00 | 0.00 | 0.00 | 0.50 | 0.50 | 0.60 | 0.40 | 0.00 | 0.00 | 1.25 | 0.67 | 1.00 | 1.00 | 0.46 | 23.63 |
| E | 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 | 0.00 | 0.00 | 0.33 | 0.50 | 0.00 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.00 | 0.07 | 3.67 |
| 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 | 1.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 2.47 |
| G | 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 | 0.00 | 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 | 0.55 |
| H | 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 | 0.25 | 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 | 0.02 | 0.82 |
| I | 1.00 | 1.25 | 0.67 | 1.00 | 2.40 | 2.00 | 1.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.67 | 0.50 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.47 | 23.96 |
| x | 0.00 | 0.25 | 0.33 | 0.00 | 0.80 | 0.50 | 1.00 | 1.25 | 1.00 | 2.00 | 0.00 | 0.50 | 0.33 | 0.33 | 0.00 | 1.00 | 1.00 | 0.50 | 0.33 | 0.00 | 0.00 | 0.00 | 0.50 | 0.40 | 0.20 | 0.00 | 0.25 | 0.00 | 1.00 | 1.00 | 0.25 | 0.48 | 24.23 |
| r | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 4.91 |
| s | 2.00 | 2.00 | 2.00 | 1.00 | 2.20 | 1.00 | 0.33 | 0.50 | 0.33 | 0.50 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.33 | 0.67 | 0.75 | 1.00 | 0.33 | 0.00 | 1.00 | 0.00 | 0.40 | 0.40 | 0.00 | 0.75 | 0.50 | 0.00 | 0.25 | 0.00 | 0.61 | 31.11 |
| a | 0.75 | 1.00 | 1.00 | 2.00 | 0.60 | 1.25 | 0.67 | 0.50 | 0.00 | 0.00 | 0.50 | 1.00 | 1.00 | 0.33 | 0.67 | 0.00 | 1.00 | 0.75 | 0.00 | 0.67 | 1.00 | 1.00 | 1.00 | 0.80 | 0.60 | 0.50 | 0.25 | 1.25 | 0.67 | 0.00 | 1.50 | 0.72 | 36.60 |
| h | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.41 |
| k | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.75 | 0.00 | 0.05 | 2.74 |
| x | 1.25 | 1.50 | 1.00 | 1.00 | 3.20 | 2.00 | 1.67 | 2.00 | 1.33 | 1.50 | 0.00 | 0.50 | 0.33 | 0.33 | 0.33 | 1.00 | 1.33 | 1.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.20 | 1.00 | 1.00 | 0.00 | 0.67 | 0.50 | 0.00 | 0.83 | 42.46 |
| o | 0.75 | 0.75 | 1.67 | 2.00 | 0.40 | 0.75 | 0.33 | 0.50 | 0.33 | 1.00 | 0.75 | 0.50 | 0.33 | 1.00 | 0.67 | 0.67 | 1.00 | 1.00 | 0.67 | 0.00 | 0.50 | 1.00 | 0.50 | 1.40 | 0.40 | 0.00 | 0.25 | 1.75 | 0.67 | 1.00 | 0.75 | 0.75 | 38.29 |
| i | 0.50 | 0.75 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.67 | 0.00 | 0.00 | 0.00 | 0.67 | 0.25 | 0.00 | 1.00 | 0.50 | 1.00 | 0.00 | 0.60 | 0.60 | 0.00 | 0.00 | 0.00 | 0.67 | 0.25 | 0.75 | 0.31 | 15.82 |
| c | 0.50 | 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 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.25 | 0.07 | 3.43 |
| CV | 49.00 | 48.75 | 44.67 | 29.67 | 29.60 | 20.00 | 9.33 | 11.25 | 6.00 | 15.00 | 14.75 | 17.75 | 21.33 | 18.67 | 10.33 | 11.00 | 32.67 | 30.75 | 11.00 | 14.67 | 15.50 | 43.50 | 26.50 | 27.00 | 15.80 | 5.50 | 9.75 | 30.00 | 49.33 | 43.75 | 28.75 | 23.92 | 100 |
| CVn | 17.50 | 14.00 | 17.00 | 8.67 | 8.80 | 9.75 | 9.00 | 10.25 | 5.00 | 13.50 | 14.75 | 17.25 | 21.00 | 18.33 | 7.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 14.25 | 40.33 | 42.25 | 26.25 | 10.18 | 42.55 |
| CVs | 31.50 | 34.75 | 27.67 | 21.00 | 20.80 | 10.25 | 0.33 | 1.00 | 1.00 | 1.50 | 0.00 | 0.50 | 0.33 | 0.33 | 2.67 | 11.00 | 32.67 | 30.75 | 11.00 | 14.67 | 15.50 | 43.50 | 26.50 | 27.00 | 15.80 | 5.50 | 9.75 | 15.75 | 9.00 | 1.50 | 2.50 | 13.74 | 57.45 |
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