Statistics of sunspot activity
September, 2005
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 | 21.25 | 18.75 | 13.50 | 11.75 | 14.75 | 11.25 | 20.75 | 30.60 | 44.40 | 54.00 | 40.60 | 58.40 | 66.25 | 79.20 | 63.00 | 45.80 | 48.20 | 47.00 | 38.60 | 18.75 | 20.20 | 24.00 | 28.60 | 27.20 | 25.40 | 31.00 | 23.60 | 23.40 | 23.00 | 15.00 | 32.94 | 100 |
| Wn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 8.50 | 11.40 | 11.40 | 11.20 | 9.40 | 0.00 | 2.75 | 0.00 | 0.00 | 0.00 | 7.00 | 19.20 | 21.00 | 14.75 | 20.20 | 24.00 | 25.80 | 14.60 | 15.60 | 22.25 | 11.60 | 11.00 | 11.50 | 3.25 | 9.21 | 27.97 |
| Ws | 21.25 | 18.75 | 13.50 | 11.75 | 14.75 | 11.25 | 12.25 | 19.20 | 33.00 | 42.80 | 31.20 | 58.40 | 63.50 | 79.20 | 63.00 | 45.80 | 41.20 | 27.80 | 17.60 | 4.00 | 0.00 | 0.00 | 2.80 | 12.60 | 9.80 | 8.75 | 12.00 | 12.40 | 11.50 | 11.75 | 23.73 | 72.03 |
| n | 1.75 | 1.25 | 1.00 | 1.00 | 1.25 | 1.00 | 1.75 | 2.00 | 2.00 | 2.20 | 1.60 | 1.00 | 1.25 | 1.00 | 1.00 | 1.00 | 1.60 | 2.20 | 2.40 | 1.00 | 1.00 | 1.00 | 1.40 | 2.00 | 2.00 | 2.50 | 2.00 | 2.00 | 2.00 | 1.25 | 1.55 | 100 |
| A | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.60 | 0.20 | 0.40 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.14 | 8.94 |
| B | 0.00 | 0.25 | 0.00 | 0.00 | 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 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.03 | 1.94 |
| C | 0.25 | 1.00 | 0.50 | 0.75 | 0.25 | 0.00 | 0.00 | 0.20 | 0.20 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.60 | 0.60 | 0.25 | 0.80 | 0.25 | 0.60 | 0.60 | 1.20 | 0.75 | 0.40 | 0.40 | 0.50 | 0.50 | 0.38 | 24.57 |
| D | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.60 | 0.40 | 0.25 | 0.00 | 0.50 | 0.40 | 0.40 | 0.20 | 0.25 | 0.20 | 0.00 | 0.00 | 0.00 | 0.15 | 9.91 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.40 | 0.40 | 0.20 | 0.50 | 0.40 | 0.80 | 0.80 | 0.80 | 0.60 | 0.40 | 0.25 | 0.00 | 0.25 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.21 | 13.79 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.20 | 0.20 | 0.60 | 0.50 | 0.40 | 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 | 0.00 | 0.00 | 0.10 | 6.25 |
| G | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.20 | 0.00 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.25 | 0.20 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 4.85 |
| 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 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.00 | 0.00 | 0.02 | 1.29 |
| I | 1.25 | 0.00 | 0.00 | 0.25 | 1.00 | 0.50 | 1.00 | 0.40 | 0.60 | 0.80 | 0.20 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.40 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.40 | 1.50 | 1.20 | 1.40 | 1.00 | 0.25 | 0.44 | 28.45 |
| x | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.60 | 0.40 | 0.40 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.20 | 0.00 | 0.00 | 0.00 | 0.50 | 0.50 | 0.17 | 10.88 |
| r | 0.50 | 0.00 | 0.00 | 0.00 | 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 | 0.20 | 0.00 | 0.20 | 0.50 | 0.20 | 0.20 | 0.00 | 0.00 | 0.07 | 4.31 |
| s | 1.00 | 0.75 | 1.00 | 0.75 | 0.50 | 0.25 | 0.75 | 0.20 | 0.20 | 0.60 | 0.20 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.40 | 0.25 | 0.00 | 0.25 | 0.40 | 0.20 | 0.60 | 1.25 | 0.60 | 0.60 | 0.75 | 0.50 | 0.42 | 26.83 |
| a | 0.00 | 0.25 | 0.00 | 0.25 | 0.75 | 0.50 | 0.25 | 0.80 | 0.40 | 0.40 | 0.20 | 0.20 | 0.25 | 0.00 | 0.00 | 0.00 | 0.60 | 1.40 | 1.40 | 0.50 | 0.60 | 0.50 | 0.40 | 1.20 | 0.80 | 0.25 | 1.00 | 1.00 | 0.75 | 0.25 | 0.50 | 32.11 |
| 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 | 0.20 | 0.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.20 | 0.00 | 0.00 | 0.00 | 0.03 | 1.83 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.40 | 0.80 | 0.80 | 0.80 | 0.80 | 0.75 | 1.00 | 1.00 | 1.00 | 0.80 | 0.80 | 0.20 | 0.25 | 0.20 | 0.25 | 0.40 | 0.20 | 0.00 | 0.25 | 0.00 | 0.20 | 0.00 | 0.00 | 0.37 | 24.03 |
| x | 1.50 | 0.00 | 0.00 | 0.25 | 1.00 | 0.75 | 1.50 | 1.00 | 0.80 | 1.20 | 0.60 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.40 | 0.20 | 0.80 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.60 | 1.50 | 1.40 | 1.60 | 1.50 | 0.50 | 0.60 | 38.69 |
| o | 0.00 | 1.25 | 1.00 | 0.75 | 0.25 | 0.25 | 0.00 | 0.80 | 0.40 | 0.00 | 0.40 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.60 | 0.80 | 0.25 | 0.40 | 0.25 | 0.80 | 1.40 | 1.20 | 1.00 | 0.60 | 0.20 | 0.50 | 0.75 | 0.48 | 30.71 |
| i | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.20 | 0.40 | 0.40 | 0.40 | 0.50 | 0.40 | 0.40 | 0.20 | 0.40 | 1.40 | 0.80 | 0.75 | 0.60 | 0.75 | 0.60 | 0.00 | 0.20 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.30 | 19.61 |
| c | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.60 | 0.60 | 0.20 | 0.40 | 0.50 | 0.60 | 0.60 | 0.80 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 10.99 |
| CV | 12.75 | 10.75 | 18.00 | 10.00 | 10.50 | 9.25 | 21.25 | 33.80 | 49.80 | 52.60 | 43.00 | 45.80 | 48.50 | 52.60 | 52.60 | 54.40 | 49.80 | 58.20 | 37.00 | 26.00 | 22.40 | 25.75 | 32.60 | 25.20 | 24.40 | 37.75 | 24.60 | 21.80 | 13.75 | 8.00 | 31.10 | 100 |
| CVn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 6.75 | 4.00 | 4.80 | 7.60 | 4.00 | 0.00 | 2.50 | 0.00 | 0.00 | 0.00 | 5.00 | 25.80 | 19.40 | 23.75 | 22.40 | 25.75 | 30.40 | 15.40 | 17.80 | 32.50 | 17.20 | 14.20 | 8.75 | 2.75 | 9.69 | 31.17 |
| CVs | 12.75 | 10.75 | 18.00 | 10.00 | 10.50 | 9.25 | 14.50 | 29.80 | 45.00 | 45.00 | 39.00 | 45.80 | 46.00 | 52.60 | 52.60 | 54.40 | 44.80 | 32.40 | 17.60 | 2.25 | 0.00 | 0.00 | 2.20 | 9.80 | 6.60 | 5.25 | 7.40 | 7.60 | 5.00 | 5.25 | 21.40 | 68.83 |
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