Statistics of sunspot activity
May, 2011
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 | 51.67 | 50.50 | 64.75 | 77.50 | 92.50 | 49.50 | 37.25 | 57.50 | 84.50 | 82.00 | 70.75 | 37.67 | 36.33 | 52.00 | 59.75 | 59.75 | 54.00 | 45.50 | 35.50 | 33.00 | 35.75 | 46.00 | 33.25 | 14.00 | 19.50 | 42.25 | 58.67 | 77.33 | 93.50 | 107.50 | 108.00 | 57.02 | 100 |
| Wn | 33.33 | 41.00 | 50.00 | 65.00 | 86.50 | 49.50 | 37.25 | 54.50 | 73.00 | 79.25 | 62.50 | 29.67 | 28.67 | 24.33 | 31.50 | 19.50 | 12.00 | 6.00 | 0.00 | 0.00 | 2.75 | 18.00 | 13.50 | 3.00 | 8.50 | 14.75 | 27.33 | 38.00 | 51.75 | 66.00 | 63.33 | 35.17 | 61.69 |
| Ws | 18.33 | 9.50 | 14.75 | 12.50 | 6.00 | 0.00 | 0.00 | 3.00 | 11.50 | 2.75 | 8.25 | 8.00 | 7.67 | 27.67 | 28.25 | 40.25 | 42.00 | 39.50 | 35.50 | 33.00 | 33.00 | 28.00 | 19.75 | 11.00 | 11.00 | 27.50 | 31.33 | 39.33 | 41.75 | 41.50 | 44.67 | 21.85 | 38.31 |
| n | 4.00 | 4.00 | 4.75 | 5.50 | 7.00 | 3.25 | 2.25 | 3.75 | 5.75 | 5.50 | 5.00 | 3.00 | 3.00 | 4.00 | 3.50 | 3.75 | 4.00 | 3.50 | 3.00 | 3.00 | 3.25 | 4.00 | 2.75 | 1.25 | 1.75 | 3.25 | 4.33 | 5.00 | 6.25 | 7.00 | 6.67 | 4.10 | 100 |
| A | 0.33 | 1.00 | 0.25 | 3.00 | 2.00 | 0.50 | 0.25 | 0.25 | 0.50 | 0.50 | 1.25 | 0.67 | 1.00 | 1.33 | 1.25 | 0.25 | 0.00 | 1.00 | 0.75 | 1.00 | 1.25 | 1.75 | 0.25 | 0.00 | 0.50 | 1.25 | 0.67 | 0.33 | 1.00 | 0.00 | 0.33 | 0.79 | 19.23 |
| B | 1.33 | 1.25 | 1.75 | 0.50 | 2.50 | 0.75 | 0.00 | 1.00 | 2.00 | 0.75 | 0.75 | 0.33 | 1.00 | 1.67 | 0.75 | 0.50 | 1.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.75 | 1.25 | 0.25 | 0.25 | 0.25 | 0.67 | 1.00 | 0.00 | 0.00 | 0.33 | 0.75 | 18.37 |
| C | 1.00 | 1.25 | 1.75 | 1.50 | 1.00 | 0.25 | 0.50 | 1.00 | 0.50 | 1.25 | 0.75 | 0.33 | 0.33 | 0.33 | 0.75 | 0.75 | 1.75 | 0.50 | 0.75 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 1.00 | 1.50 | 2.00 | 0.69 | 16.93 |
| D | 0.33 | 0.00 | 0.00 | 0.00 | 0.50 | 1.00 | 0.75 | 0.75 | 1.25 | 1.25 | 1.25 | 0.33 | 0.00 | 0.33 | 0.50 | 1.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.33 | 1.67 | 1.25 | 3.25 | 2.00 | 0.63 | 15.35 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.25 | 0.00 | 0.03 | 0.66 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| G | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.33 | 0.25 | 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 | 0.00 | 0.00 | 0.06 | 1.57 |
| 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 | 1.00 | 0.25 | 1.00 | 0.50 | 1.00 | 0.75 | 0.75 | 0.75 | 1.50 | 1.75 | 1.00 | 1.00 | 0.33 | 0.00 | 0.00 | 1.00 | 1.00 | 1.25 | 1.25 | 2.00 | 2.00 | 1.50 | 1.00 | 1.00 | 1.00 | 1.00 | 1.67 | 1.67 | 2.50 | 2.00 | 2.00 | 1.14 | 27.89 |
| x | 1.67 | 2.25 | 2.00 | 3.50 | 4.50 | 1.25 | 0.25 | 1.25 | 2.50 | 1.25 | 2.00 | 1.00 | 2.00 | 3.00 | 2.00 | 0.75 | 1.25 | 1.25 | 1.00 | 1.00 | 1.25 | 2.50 | 1.50 | 0.25 | 0.75 | 1.50 | 1.33 | 1.33 | 1.00 | 0.00 | 0.67 | 1.54 | 37.60 |
| r | 0.00 | 0.00 | 0.75 | 0.00 | 1.00 | 0.25 | 0.25 | 0.50 | 0.00 | 0.25 | 0.25 | 0.67 | 0.33 | 0.33 | 0.25 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.22 | 5.31 |
| s | 2.00 | 1.75 | 1.50 | 0.00 | 1.00 | 1.25 | 1.25 | 1.25 | 2.25 | 4.00 | 2.50 | 1.00 | 0.67 | 0.67 | 0.75 | 2.00 | 2.00 | 2.25 | 1.75 | 2.00 | 1.50 | 1.25 | 1.00 | 1.00 | 1.00 | 1.25 | 2.00 | 2.33 | 3.50 | 4.75 | 4.33 | 1.80 | 43.90 |
| a | 0.00 | 0.00 | 0.50 | 2.00 | 0.50 | 0.50 | 0.50 | 0.75 | 1.00 | 0.00 | 0.25 | 0.33 | 0.00 | 0.00 | 0.50 | 1.00 | 0.25 | 0.00 | 0.25 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 1.33 | 1.25 | 1.00 | 0.33 | 0.43 | 10.50 |
| h | 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 | 0.00 | 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 | 0.67 | 0.05 | 1.18 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.75 | 0.67 | 0.06 | 1.51 |
| x | 1.33 | 1.25 | 1.25 | 3.50 | 3.00 | 1.25 | 1.00 | 1.00 | 2.00 | 2.25 | 2.25 | 1.67 | 1.33 | 1.33 | 1.25 | 1.25 | 1.00 | 2.25 | 2.00 | 3.00 | 3.25 | 3.25 | 1.25 | 1.00 | 1.50 | 2.25 | 2.33 | 2.00 | 3.50 | 2.00 | 2.33 | 1.93 | 47.11 |
| o | 2.67 | 2.75 | 3.50 | 1.50 | 3.50 | 1.75 | 1.00 | 2.50 | 3.00 | 2.25 | 2.00 | 1.33 | 1.67 | 2.67 | 2.25 | 2.00 | 2.75 | 1.25 | 1.00 | 0.00 | 0.00 | 0.75 | 1.50 | 0.25 | 0.25 | 1.00 | 2.00 | 2.67 | 1.75 | 3.00 | 2.00 | 1.82 | 44.49 |
| i | 0.00 | 0.00 | 0.00 | 0.50 | 0.50 | 0.25 | 0.25 | 0.25 | 0.75 | 1.00 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 1.00 | 1.75 | 1.67 | 0.31 | 7.68 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.67 | 0.03 | 0.72 |
| CV | 42.33 | 26.50 | 27.00 | 20.00 | 33.00 | 32.00 | 27.50 | 33.50 | 53.00 | 65.00 | 50.50 | 27.00 | 16.67 | 21.33 | 26.25 | 47.50 | 28.25 | 32.00 | 21.25 | 21.00 | 19.75 | 16.75 | 14.00 | 10.50 | 11.00 | 20.50 | 44.00 | 62.33 | 87.75 | 152.75 | 130.67 | 39.41 | 100 |
| CVn | 37.00 | 25.00 | 22.00 | 18.50 | 32.00 | 32.00 | 27.50 | 33.25 | 51.50 | 64.75 | 49.75 | 26.00 | 15.67 | 14.33 | 10.75 | 12.50 | 3.50 | 2.75 | 0.00 | 0.00 | 0.25 | 2.00 | 2.75 | 0.50 | 1.00 | 1.25 | 20.33 | 31.33 | 37.00 | 78.50 | 42.67 | 22.46 | 57.00 |
| CVs | 5.33 | 1.50 | 5.00 | 1.50 | 1.00 | 0.00 | 0.00 | 0.25 | 1.50 | 0.25 | 0.75 | 1.00 | 1.00 | 7.00 | 15.50 | 35.00 | 24.75 | 29.25 | 21.25 | 21.00 | 19.50 | 14.75 | 11.25 | 10.00 | 10.00 | 19.25 | 23.67 | 31.00 | 50.75 | 74.25 | 88.00 | 16.94 | 43.00 |
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