Statistics of sunspot activity
May, 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 | 31 | Average | % |
| W | 51.75 | 45.75 | 65.60 | 60.00 | 53.33 | 64.00 | 53.33 | 75.75 | 91.00 | 93.00 | 100.00 | 94.40 | 94.67 | 78.80 | 55.80 | 63.00 | 45.60 | 39.67 | 28.40 | 17.60 | 19.67 | 32.60 | 30.80 | 37.00 | 42.60 | 58.00 | 50.50 | 44.75 | 66.25 | 54.40 | 75.25 | 57.52 | 100 |
| Wn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 19.00 | 25.25 | 28.25 | 22.00 | 18.40 | 28.33 | 27.80 | 20.20 | 18.40 | 12.60 | 14.00 | 19.80 | 17.60 | 16.00 | 19.40 | 15.60 | 16.00 | 15.40 | 15.80 | 11.50 | 6.50 | 16.50 | 19.00 | 26.75 | 14.52 | 25.24 |
| Ws | 51.75 | 45.75 | 65.60 | 60.00 | 53.33 | 64.00 | 53.33 | 56.75 | 65.75 | 64.75 | 78.00 | 76.00 | 66.33 | 51.00 | 35.60 | 44.60 | 33.00 | 25.67 | 8.60 | 0.00 | 3.67 | 13.20 | 15.20 | 21.00 | 27.20 | 42.20 | 39.00 | 38.25 | 49.75 | 35.40 | 48.50 | 43.01 | 74.76 |
| n | 2.25 | 2.50 | 3.40 | 3.50 | 2.33 | 2.50 | 2.33 | 2.75 | 3.25 | 5.25 | 5.75 | 5.20 | 4.00 | 3.80 | 2.80 | 3.00 | 2.00 | 2.00 | 2.40 | 1.60 | 1.67 | 2.60 | 2.00 | 2.00 | 2.00 | 2.80 | 3.00 | 2.00 | 3.75 | 2.80 | 5.25 | 2.98 | 100 |
| A | 0.25 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 1.00 | 0.50 | 0.40 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.00 | 0.60 | 0.40 | 1.00 | 0.80 | 0.00 | 0.33 | 0.00 | 0.00 | 0.50 | 0.25 | 1.25 | 0.00 | 1.00 | 0.31 | 10.36 |
| B | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.40 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.20 | 0.60 | 0.00 | 0.25 | 0.25 | 0.80 | 1.25 | 0.18 | 6.15 |
| C | 0.25 | 0.50 | 0.80 | 0.50 | 0.33 | 0.75 | 0.33 | 0.50 | 0.50 | 0.75 | 2.00 | 0.80 | 0.00 | 0.80 | 1.20 | 0.80 | 0.80 | 0.33 | 0.00 | 0.00 | 0.00 | 0.80 | 0.60 | 0.33 | 0.40 | 0.60 | 0.75 | 0.25 | 0.75 | 0.40 | 1.00 | 0.58 | 19.28 |
| D | 1.00 | 1.50 | 1.80 | 0.75 | 0.67 | 0.75 | 0.67 | 0.50 | 0.25 | 1.75 | 1.75 | 2.40 | 2.67 | 2.00 | 1.60 | 0.60 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 1.33 | 1.00 | 1.20 | 1.25 | 0.75 | 1.25 | 1.00 | 1.00 | 1.03 | 34.42 |
| E | 0.50 | 0.00 | 0.00 | 0.50 | 0.67 | 0.25 | 0.00 | 0.25 | 0.75 | 0.25 | 0.75 | 0.60 | 0.00 | 0.20 | 0.00 | 0.40 | 0.40 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.25 | 0.00 | 0.25 | 0.40 | 0.00 | 0.24 | 8.09 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.75 | 0.50 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 2.29 |
| G | 0.00 | 0.00 | 0.40 | 0.25 | 0.33 | 0.50 | 0.33 | 0.00 | 0.75 | 0.75 | 0.25 | 0.40 | 1.00 | 0.20 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.20 | 0.00 | 0.00 | 0.25 | 0.00 | 0.20 | 0.75 | 0.23 | 7.75 |
| H | 0.25 | 0.00 | 0.00 | 0.50 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.40 | 0.67 | 0.40 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 3.60 |
| I | 0.00 | 0.50 | 0.20 | 0.75 | 0.00 | 0.00 | 0.33 | 0.50 | 0.25 | 0.00 | 0.50 | 0.00 | 0.00 | 0.60 | 0.00 | 0.20 | 0.00 | 0.00 | 1.00 | 1.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.24 | 8.06 |
| x | 0.25 | 0.00 | 0.20 | 0.25 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 1.75 | 0.50 | 0.80 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.33 | 1.00 | 0.40 | 1.00 | 0.80 | 0.20 | 0.33 | 0.20 | 0.60 | 0.50 | 0.50 | 1.50 | 0.80 | 2.25 | 0.49 | 16.51 |
| r | 0.00 | 0.25 | 0.40 | 0.50 | 0.00 | 0.50 | 0.00 | 0.25 | 0.25 | 1.00 | 1.25 | 0.20 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.60 | 0.20 | 0.00 | 0.20 | 0.80 | 1.00 | 0.00 | 0.00 | 0.40 | 0.75 | 0.29 | 9.68 |
| s | 0.50 | 0.75 | 1.40 | 1.00 | 0.33 | 0.25 | 0.67 | 0.50 | 0.50 | 0.50 | 1.25 | 0.60 | 0.67 | 1.00 | 0.40 | 0.40 | 0.40 | 0.00 | 0.40 | 0.60 | 0.00 | 0.60 | 0.80 | 1.00 | 0.60 | 0.40 | 0.00 | 0.50 | 0.75 | 0.20 | 1.00 | 0.58 | 19.43 |
| a | 0.50 | 0.75 | 0.60 | 0.75 | 1.00 | 1.00 | 1.33 | 1.25 | 1.00 | 1.00 | 1.50 | 2.40 | 1.33 | 2.00 | 1.80 | 1.20 | 1.00 | 0.67 | 0.40 | 0.40 | 0.67 | 0.60 | 0.80 | 0.67 | 1.00 | 1.00 | 1.25 | 0.75 | 1.50 | 1.40 | 1.25 | 1.06 | 35.43 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.25 | 0.40 | 1.00 | 0.40 | 0.40 | 0.60 | 0.20 | 0.67 | 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 | 0.16 | 5.26 |
| k | 1.00 | 0.75 | 0.80 | 1.00 | 1.00 | 0.75 | 0.33 | 0.50 | 0.75 | 0.75 | 1.00 | 0.80 | 1.00 | 0.20 | 0.20 | 0.20 | 0.40 | 0.33 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.41 | 13.70 |
| x | 0.50 | 0.50 | 0.40 | 1.25 | 0.33 | 0.25 | 0.33 | 0.75 | 0.50 | 1.00 | 1.00 | 0.40 | 0.33 | 0.60 | 0.00 | 0.80 | 0.40 | 0.67 | 2.00 | 1.60 | 1.67 | 0.80 | 0.00 | 0.33 | 0.00 | 0.20 | 0.75 | 0.50 | 1.25 | 0.00 | 1.25 | 0.66 | 22.02 |
| o | 1.00 | 1.25 | 2.20 | 1.00 | 0.67 | 0.75 | 1.00 | 1.00 | 1.25 | 3.25 | 2.75 | 3.20 | 2.33 | 2.40 | 2.00 | 1.60 | 0.80 | 0.67 | 0.40 | 0.00 | 0.00 | 1.60 | 2.00 | 1.67 | 1.40 | 2.00 | 1.50 | 1.00 | 1.75 | 1.80 | 4.00 | 1.56 | 52.15 |
| i | 0.25 | 0.25 | 0.20 | 0.50 | 0.67 | 1.00 | 0.67 | 1.00 | 0.75 | 1.00 | 1.50 | 1.20 | 1.00 | 0.60 | 0.80 | 0.40 | 0.80 | 0.67 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.60 | 0.40 | 0.50 | 0.50 | 0.75 | 0.60 | 0.00 | 0.54 | 18.17 |
| c | 0.50 | 0.50 | 0.60 | 0.75 | 0.67 | 0.50 | 0.33 | 0.00 | 0.75 | 0.00 | 0.50 | 0.40 | 0.33 | 0.20 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.00 | 0.00 | 0.40 | 0.00 | 0.23 | 7.66 |
| CV | 67.75 | 64.00 | 83.20 | 81.00 | 75.67 | 63.75 | 55.33 | 56.00 | 96.50 | 88.00 | 117.25 | 119.00 | 140.00 | 80.80 | 60.80 | 65.20 | 47.20 | 55.33 | 24.40 | 16.60 | 5.67 | 28.00 | 31.20 | 33.33 | 35.00 | 35.60 | 43.25 | 32.75 | 41.75 | 41.40 | 50.25 | 59.23 | 100 |
| CVn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 28.00 | 53.00 | 32.75 | 29.50 | 37.20 | 51.33 | 34.80 | 30.60 | 37.20 | 26.80 | 39.33 | 23.40 | 16.60 | 3.33 | 8.20 | 12.60 | 10.33 | 14.00 | 10.00 | 6.25 | 3.00 | 14.25 | 14.00 | 16.75 | 17.85 | 30.13 |
| CVs | 67.75 | 64.00 | 83.20 | 81.00 | 75.67 | 63.75 | 55.33 | 28.00 | 43.50 | 55.25 | 87.75 | 81.80 | 88.67 | 46.00 | 30.20 | 28.00 | 20.40 | 16.00 | 1.00 | 0.00 | 2.33 | 19.80 | 18.60 | 23.00 | 21.00 | 25.60 | 37.00 | 29.75 | 27.50 | 27.40 | 33.50 | 41.38 | 69.87 |
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