Statistics of sunspot activity
August, 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 | 114.67 | 124.33 | 76.00 | 84.25 | 87.50 | 78.50 | 83.25 | 64.50 | 54.00 | 36.50 | 33.50 | 22.00 | 20.00 | 34.00 | 12.00 | 29.00 | 49.00 | 58.25 | 62.75 | 55.75 | 65.00 | 98.00 | 98.50 | 70.75 | 74.75 | 78.25 | 66.00 | 74.25 | 52.75 | 91.50 | 124.75 | 66.91 | 100 |
| Wn | 114.67 | 124.33 | 76.00 | 81.25 | 71.50 | 58.25 | 61.75 | 50.50 | 44.00 | 36.50 | 21.00 | 12.00 | 16.00 | 23.00 | 12.00 | 16.33 | 21.25 | 29.75 | 34.75 | 37.50 | 47.00 | 70.33 | 81.00 | 58.75 | 63.75 | 75.50 | 60.50 | 64.00 | 38.50 | 63.00 | 89.00 | 53.34 | 79.72 |
| Ws | 0.00 | 0.00 | 0.00 | 3.00 | 16.00 | 20.25 | 21.50 | 14.00 | 10.00 | 0.00 | 12.50 | 10.00 | 4.00 | 11.00 | 0.00 | 12.67 | 27.75 | 28.50 | 28.00 | 18.25 | 18.00 | 27.67 | 17.50 | 12.00 | 11.00 | 2.75 | 5.50 | 10.25 | 14.25 | 28.50 | 35.75 | 13.57 | 20.28 |
| n | 4.00 | 5.00 | 3.25 | 4.25 | 4.50 | 3.75 | 3.75 | 3.50 | 3.00 | 2.50 | 2.75 | 1.75 | 1.67 | 3.00 | 1.00 | 2.00 | 3.25 | 3.25 | 4.00 | 2.75 | 4.00 | 5.00 | 5.75 | 4.25 | 5.25 | 6.00 | 5.50 | 5.75 | 4.00 | 7.25 | 8.50 | 4.01 | 100 |
| A | 0.33 | 0.67 | 0.25 | 0.50 | 0.25 | 0.00 | 0.00 | 0.25 | 0.50 | 0.75 | 0.75 | 0.25 | 0.67 | 1.00 | 0.00 | 0.33 | 0.25 | 0.00 | 1.50 | 0.50 | 0.50 | 1.00 | 2.00 | 2.25 | 2.00 | 0.50 | 0.75 | 0.25 | 0.50 | 1.75 | 1.00 | 0.69 | 17.11 |
| B | 0.00 | 0.33 | 0.00 | 0.25 | 1.50 | 0.75 | 0.00 | 0.75 | 0.50 | 0.25 | 1.00 | 1.25 | 0.67 | 2.00 | 0.00 | 0.33 | 0.75 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.00 | 0.50 | 2.25 | 0.75 | 2.25 | 1.25 | 0.66 | 16.38 |
| C | 0.00 | 0.00 | 0.50 | 0.50 | 0.00 | 0.00 | 1.00 | 0.00 | 0.50 | 0.25 | 0.50 | 0.25 | 0.33 | 0.00 | 0.33 | 0.33 | 0.75 | 1.25 | 0.75 | 1.00 | 0.50 | 0.67 | 0.50 | 0.50 | 0.00 | 0.75 | 2.00 | 1.50 | 1.25 | 0.75 | 2.00 | 0.60 | 15.03 |
| D | 1.33 | 0.67 | 2.00 | 1.75 | 0.75 | 2.00 | 1.75 | 1.50 | 0.50 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.00 | 0.25 | 0.50 | 1.25 | 2.00 | 1.75 | 0.50 | 0.75 | 2.00 | 0.00 | 0.25 | 0.00 | 0.25 | 1.50 | 0.81 | 20.27 |
| E | 0.67 | 1.67 | 0.25 | 0.50 | 1.00 | 1.00 | 1.00 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.50 | 0.50 | 0.00 | 0.25 | 0.67 | 0.25 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.35 | 8.66 |
| F | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.94 |
| G | 0.67 | 1.33 | 0.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.50 | 0.25 | 0.50 | 0.50 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 4.90 |
| 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 | 0.25 | 0.50 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.81 |
| I | 0.67 | 0.00 | 0.00 | 0.50 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.50 | 0.00 | 0.50 | 0.25 | 1.00 | 0.67 | 1.25 | 0.25 | 1.00 | 1.75 | 2.00 | 1.50 | 1.50 | 2.25 | 2.75 | 0.64 | 15.91 |
| x | 0.33 | 1.00 | 0.25 | 0.75 | 1.75 | 0.75 | 0.00 | 1.00 | 1.00 | 1.00 | 1.75 | 1.50 | 1.33 | 3.00 | 0.00 | 0.67 | 1.00 | 1.00 | 1.75 | 0.50 | 0.50 | 1.00 | 2.00 | 2.25 | 2.75 | 1.50 | 1.25 | 2.50 | 1.25 | 4.00 | 2.25 | 1.34 | 33.49 |
| r | 0.33 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.33 | 0.00 | 0.33 | 0.33 | 0.00 | 0.00 | 0.25 | 0.25 | 1.50 | 0.00 | 0.75 | 0.50 | 0.00 | 0.25 | 0.50 | 0.75 | 0.50 | 0.75 | 0.75 | 0.31 | 7.72 |
| s | 0.33 | 0.00 | 0.50 | 0.50 | 1.25 | 2.00 | 1.75 | 1.25 | 0.75 | 0.50 | 0.75 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 2.00 | 1.75 | 1.50 | 1.00 | 0.50 | 3.00 | 1.50 | 0.50 | 1.50 | 3.75 | 3.50 | 2.25 | 2.25 | 2.25 | 4.25 | 1.34 | 33.36 |
| a | 0.00 | 0.00 | 0.75 | 1.25 | 0.50 | 0.00 | 0.75 | 0.50 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 1.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.25 | 0.67 | 0.75 | 0.50 | 0.25 | 0.25 | 0.00 | 0.25 | 0.00 | 0.25 | 1.25 | 0.40 | 10.07 |
| h | 1.33 | 2.00 | 0.50 | 0.50 | 0.25 | 0.50 | 0.00 | 0.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.50 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.50 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.28 | 7.11 |
| k | 1.67 | 2.00 | 1.25 | 0.75 | 0.75 | 0.50 | 1.00 | 0.50 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.75 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 8.26 |
| x | 1.00 | 0.67 | 0.25 | 1.00 | 1.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.75 | 0.75 | 0.25 | 0.67 | 1.00 | 0.67 | 0.33 | 0.75 | 0.00 | 2.00 | 0.75 | 1.50 | 1.67 | 3.25 | 2.75 | 3.50 | 2.25 | 3.00 | 1.75 | 2.00 | 4.00 | 3.75 | 1.35 | 33.83 |
| o | 1.00 | 1.67 | 1.75 | 1.75 | 2.00 | 2.50 | 2.50 | 2.00 | 1.75 | 1.50 | 2.00 | 1.50 | 1.00 | 2.00 | 0.33 | 1.33 | 1.75 | 2.25 | 1.25 | 1.50 | 2.00 | 1.00 | 1.25 | 0.50 | 1.00 | 3.50 | 2.50 | 4.00 | 2.00 | 3.00 | 4.25 | 1.88 | 46.98 |
| i | 0.33 | 1.33 | 0.50 | 0.25 | 0.00 | 0.25 | 0.25 | 1.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.50 | 0.50 | 0.25 | 0.00 | 0.25 | 1.33 | 1.25 | 1.00 | 0.75 | 0.25 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.37 | 9.33 |
| c | 1.67 | 1.33 | 0.75 | 1.25 | 1.50 | 1.00 | 1.00 | 0.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.50 | 0.50 | 0.25 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 9.87 |
| CV | 165.00 | 208.00 | 110.00 | 105.50 | 94.25 | 109.75 | 105.50 | 83.25 | 56.25 | 39.00 | 19.25 | 4.00 | 3.67 | 5.00 | 7.33 | 23.00 | 50.75 | 58.75 | 56.75 | 45.50 | 59.25 | 99.33 | 79.25 | 46.75 | 64.00 | 82.75 | 50.75 | 37.25 | 27.75 | 37.25 | 81.75 | 65.05 | 100 |
| CVn | 165.00 | 208.00 | 110.00 | 105.25 | 92.25 | 84.75 | 82.25 | 69.75 | 55.25 | 39.00 | 10.75 | 2.50 | 3.33 | 3.00 | 7.33 | 20.33 | 35.75 | 43.00 | 45.00 | 35.00 | 38.00 | 64.00 | 64.25 | 42.50 | 63.00 | 82.50 | 50.25 | 29.25 | 23.00 | 31.75 | 58.00 | 56.90 | 87.47 |
| CVs | 0.00 | 0.00 | 0.00 | 0.25 | 2.00 | 25.00 | 23.25 | 13.50 | 1.00 | 0.00 | 8.50 | 1.50 | 0.33 | 2.00 | 0.00 | 2.67 | 15.00 | 15.75 | 11.75 | 10.50 | 21.25 | 35.33 | 15.00 | 4.25 | 1.00 | 0.25 | 0.50 | 8.00 | 4.75 | 5.50 | 23.75 | 8.15 | 12.53 |
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