Statistics of sunspot activity
February, 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 | Average | % |
| W | 26.67 | 28.00 | 15.33 | 22.00 | 22.00 | 48.67 | 43.50 | 46.75 | 66.00 | 65.33 | 66.00 | 83.67 | 68.33 | 76.50 | 68.50 | 78.00 | 47.67 | 53.67 | 48.80 | 36.75 | 32.20 | 27.00 | 27.25 | 16.67 | 16.33 | 17.00 | 18.00 | 11.00 | 42.06 | 100 |
| Wn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 21.00 | 20.50 | 19.75 | 20.00 | 15.33 | 8.00 | 25.33 | 12.33 | 9.00 | 7.00 | 6.50 | 0.00 | 11.00 | 2.40 | 7.75 | 17.00 | 14.75 | 3.25 | 0.00 | 0.00 | 0.00 | 6.00 | 0.00 | 8.10 | 19.27 |
| Ws | 26.67 | 28.00 | 15.33 | 22.00 | 22.00 | 27.67 | 23.00 | 27.00 | 46.00 | 50.00 | 58.00 | 58.33 | 56.00 | 67.50 | 61.50 | 71.50 | 47.67 | 42.67 | 46.40 | 29.00 | 15.20 | 12.25 | 24.00 | 16.67 | 16.33 | 17.00 | 12.00 | 11.00 | 33.95 | 80.73 |
| n | 2.00 | 2.00 | 1.33 | 2.00 | 2.00 | 4.00 | 3.75 | 3.25 | 4.50 | 5.33 | 5.00 | 5.67 | 4.67 | 4.00 | 4.00 | 4.50 | 3.00 | 4.00 | 3.60 | 2.50 | 2.20 | 2.00 | 2.00 | 1.00 | 1.33 | 1.33 | 1.50 | 1.00 | 2.98 | 100 |
| A | 0.00 | 0.00 | 0.33 | 0.50 | 1.00 | 0.33 | 0.50 | 0.25 | 0.50 | 0.67 | 0.67 | 1.00 | 0.67 | 0.25 | 0.00 | 0.50 | 0.00 | 0.67 | 0.80 | 0.50 | 0.00 | 0.00 | 0.25 | 0.00 | 0.67 | 0.33 | 1.50 | 1.00 | 0.46 | 15.44 |
| B | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.67 | 0.00 | 0.67 | 0.00 | 0.75 | 1.00 | 1.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.00 | 0.00 | 0.50 | 0.00 | 0.67 | 1.00 | 0.00 | 0.00 | 0.26 | 8.73 |
| C | 0.67 | 0.33 | 0.33 | 0.00 | 0.00 | 0.33 | 0.75 | 0.75 | 0.50 | 0.33 | 0.67 | 0.00 | 0.67 | 1.25 | 1.00 | 1.50 | 0.67 | 1.00 | 1.20 | 0.25 | 0.40 | 1.00 | 0.75 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.54 | 17.99 |
| D | 0.67 | 0.67 | 0.00 | 0.00 | 0.00 | 0.67 | 0.25 | 0.75 | 0.50 | 0.67 | 1.00 | 0.33 | 1.33 | 1.00 | 1.00 | 1.00 | 2.00 | 1.33 | 0.40 | 0.75 | 1.20 | 0.25 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.58 | 19.59 |
| E | 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 | 0.50 | 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 | 0.04 | 1.20 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 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 | 0.03 | 0.90 |
| G | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.00 | 0.00 | 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 | 0.04 | 1.40 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.50 | 0.67 | 1.00 | 1.33 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.20 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.21 | 6.93 |
| I | 0.67 | 1.00 | 0.67 | 1.50 | 1.00 | 2.33 | 2.00 | 0.50 | 1.50 | 2.33 | 1.67 | 1.67 | 1.67 | 0.50 | 0.50 | 0.00 | 0.33 | 1.00 | 1.00 | 0.50 | 0.40 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.83 | 27.84 |
| x | 0.00 | 0.00 | 0.33 | 0.50 | 1.00 | 0.67 | 0.75 | 0.25 | 0.50 | 1.33 | 0.67 | 1.67 | 0.67 | 1.00 | 1.00 | 1.50 | 0.00 | 0.67 | 1.00 | 0.75 | 0.00 | 0.00 | 0.75 | 0.00 | 1.33 | 1.33 | 1.50 | 1.00 | 0.72 | 24.16 |
| r | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.25 | 0.50 | 0.00 | 0.33 | 0.00 | 0.33 | 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 | 0.08 | 2.74 |
| s | 1.00 | 0.33 | 1.00 | 1.50 | 1.00 | 1.33 | 1.50 | 1.00 | 1.50 | 1.33 | 1.67 | 1.00 | 1.33 | 0.50 | 0.50 | 2.00 | 1.00 | 1.67 | 1.20 | 0.75 | 0.20 | 0.50 | 1.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.91 | 30.43 |
| a | 1.00 | 1.67 | 0.00 | 0.00 | 0.00 | 1.33 | 1.50 | 1.00 | 1.50 | 1.67 | 0.67 | 1.00 | 0.67 | 1.00 | 1.50 | 0.00 | 1.00 | 1.00 | 0.40 | 0.25 | 1.20 | 0.25 | 0.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.69 | 23.08 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.33 | 1.00 | 0.33 | 0.67 | 0.00 | 0.50 | 0.50 | 0.67 | 0.00 | 0.20 | 0.25 | 0.20 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 6.77 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.67 | 0.67 | 1.67 | 1.00 | 1.50 | 0.50 | 0.50 | 0.33 | 0.67 | 0.60 | 0.50 | 0.60 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.38 | 12.82 |
| x | 0.67 | 1.00 | 1.00 | 2.00 | 2.00 | 2.67 | 2.50 | 1.50 | 2.50 | 3.67 | 3.33 | 4.00 | 2.67 | 1.00 | 0.50 | 0.50 | 0.33 | 1.67 | 1.80 | 1.25 | 0.60 | 0.75 | 0.50 | 0.00 | 0.67 | 0.33 | 1.50 | 1.00 | 1.50 | 50.20 |
| o | 1.33 | 1.00 | 0.33 | 0.00 | 0.00 | 1.33 | 1.25 | 1.50 | 1.00 | 1.67 | 1.67 | 1.33 | 1.67 | 2.25 | 2.50 | 3.50 | 1.67 | 2.33 | 1.40 | 0.75 | 1.20 | 1.25 | 1.25 | 1.00 | 0.67 | 1.00 | 0.00 | 0.00 | 1.24 | 41.75 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.75 | 0.50 | 0.50 | 1.00 | 0.00 | 0.40 | 0.50 | 0.40 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.21 | 7.05 |
| c | 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 | 0.50 | 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 | 0.03 | 1.00 |
| CV | 27.67 | 23.33 | 10.67 | 15.50 | 11.00 | 34.67 | 30.25 | 63.75 | 68.00 | 73.33 | 99.67 | 109.00 | 99.33 | 79.25 | 80.00 | 82.50 | 82.67 | 66.00 | 52.00 | 46.75 | 54.40 | 57.00 | 19.00 | 13.67 | 2.00 | 2.33 | 1.50 | 1.00 | 46.65 | 100 |
| CVn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 15.00 | 15.00 | 16.50 | 18.50 | 7.67 | 4.33 | 10.33 | 12.67 | 1.25 | 1.00 | 1.00 | 0.00 | 4.00 | 0.40 | 5.25 | 18.80 | 25.50 | 2.75 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 5.73 | 12.28 |
| CVs | 27.67 | 23.33 | 10.67 | 15.50 | 11.00 | 19.67 | 15.25 | 47.25 | 49.50 | 65.67 | 95.33 | 98.67 | 86.67 | 78.00 | 79.00 | 81.50 | 82.67 | 62.00 | 51.60 | 41.50 | 35.60 | 31.50 | 16.25 | 13.67 | 2.00 | 2.33 | 1.00 | 1.00 | 40.92 | 87.72 |
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