Statistics of sunspot activity
May, 2015
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 | 23.00 | 35.75 | 61.67 | 108.25 | 108.00 | 115.50 | 138.50 | 154.33 | 131.50 | 150.50 | 182.50 | 183.00 | 144.33 | 160.50 | 131.25 | 102.50 | 81.67 | 88.00 | 79.25 | 55.00 | 54.67 | 74.50 | 68.00 | 76.00 | 65.50 | 70.67 | 57.00 | 23.50 | 32.00 | 37.00 | 46.00 | 91.61 | 100 |
| Wn | 0.00 | 0.00 | 21.33 | 37.25 | 53.75 | 60.25 | 61.25 | 81.67 | 77.75 | 87.25 | 118.75 | 122.67 | 95.33 | 102.75 | 76.75 | 50.25 | 27.33 | 26.00 | 26.50 | 17.67 | 23.00 | 33.25 | 29.00 | 19.50 | 15.25 | 21.00 | 33.50 | 0.00 | 9.25 | 15.00 | 12.25 | 43.73 | 47.73 |
| Ws | 23.00 | 35.75 | 40.33 | 71.00 | 54.25 | 55.25 | 77.25 | 72.67 | 53.75 | 63.25 | 63.75 | 60.33 | 49.00 | 57.75 | 54.50 | 52.25 | 54.33 | 62.00 | 52.75 | 37.33 | 31.67 | 41.25 | 39.00 | 56.50 | 50.25 | 49.67 | 23.50 | 23.50 | 22.75 | 22.00 | 33.75 | 47.88 | 52.27 |
| n | 1.67 | 2.00 | 3.67 | 5.50 | 5.50 | 5.50 | 7.00 | 6.67 | 6.50 | 7.75 | 9.75 | 11.00 | 8.67 | 10.25 | 8.25 | 7.00 | 6.33 | 7.00 | 6.00 | 4.33 | 4.33 | 5.50 | 4.75 | 5.00 | 5.00 | 5.67 | 5.00 | 2.00 | 2.75 | 2.67 | 3.50 | 5.69 | 100 |
| A | 0.00 | 1.00 | 1.33 | 1.50 | 1.00 | 0.50 | 1.00 | 0.33 | 1.00 | 0.00 | 1.50 | 3.00 | 1.67 | 2.50 | 1.25 | 0.75 | 0.00 | 0.50 | 0.75 | 1.00 | 0.67 | 1.25 | 0.50 | 1.00 | 0.75 | 1.00 | 3.50 | 1.00 | 1.00 | 0.33 | 1.25 | 1.06 | 18.60 |
| B | 0.67 | 0.00 | 0.67 | 2.00 | 1.25 | 0.75 | 0.75 | 1.00 | 0.50 | 2.00 | 2.25 | 2.33 | 1.33 | 1.25 | 0.00 | 0.75 | 1.33 | 1.50 | 1.50 | 0.67 | 1.67 | 1.50 | 1.75 | 0.25 | 0.00 | 0.67 | 0.50 | 0.00 | 0.50 | 1.33 | 1.00 | 1.02 | 17.94 |
| C | 0.67 | 0.00 | 0.67 | 0.50 | 0.25 | 1.00 | 0.50 | 0.33 | 2.25 | 2.25 | 1.75 | 2.00 | 2.33 | 3.00 | 1.50 | 1.00 | 0.00 | 1.50 | 2.00 | 1.67 | 1.00 | 1.00 | 0.75 | 1.25 | 2.50 | 2.00 | 0.50 | 0.00 | 0.25 | 1.00 | 0.75 | 1.17 | 20.49 |
| D | 0.33 | 0.75 | 1.00 | 0.25 | 2.00 | 1.25 | 1.25 | 1.00 | 0.25 | 0.50 | 0.50 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 1.00 | 0.25 | 0.00 | 0.00 | 0.33 | 1.00 | 0.75 | 1.50 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.48 | 8.36 |
| E | 0.00 | 0.25 | 0.00 | 1.00 | 1.00 | 1.75 | 0.75 | 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 | 0.16 | 2.88 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.75 | 0.75 | 0.75 | 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 | 0.31 | 5.38 |
| G | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.25 | 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 | 0.04 | 0.76 |
| 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 | 0.25 | 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 | 0.01 | 0.14 |
| I | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 1.50 | 2.33 | 1.25 | 2.00 | 2.75 | 2.67 | 2.00 | 2.25 | 4.50 | 3.75 | 4.00 | 3.00 | 1.75 | 1.00 | 0.67 | 0.75 | 1.00 | 1.00 | 1.50 | 2.00 | 0.50 | 1.00 | 1.00 | 0.00 | 0.50 | 1.45 | 25.45 |
| x | 0.67 | 1.00 | 2.00 | 3.50 | 2.25 | 1.25 | 1.75 | 1.33 | 1.50 | 2.00 | 3.75 | 5.33 | 3.00 | 3.75 | 1.25 | 1.50 | 1.33 | 2.00 | 2.25 | 1.67 | 2.33 | 2.75 | 2.25 | 1.25 | 0.75 | 1.67 | 4.00 | 1.00 | 1.50 | 1.67 | 2.25 | 2.08 | 36.54 |
| r | 0.00 | 0.00 | 0.67 | 0.50 | 0.00 | 0.75 | 0.00 | 0.33 | 1.00 | 0.25 | 0.75 | 0.67 | 0.00 | 0.25 | 1.00 | 0.25 | 0.00 | 0.50 | 0.75 | 0.67 | 0.67 | 1.00 | 0.50 | 0.00 | 0.25 | 1.33 | 1.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.43 | 7.55 |
| s | 0.33 | 0.25 | 0.00 | 0.00 | 0.75 | 0.75 | 2.25 | 2.33 | 2.75 | 3.75 | 2.75 | 3.67 | 2.33 | 3.75 | 3.25 | 3.00 | 2.67 | 2.25 | 1.00 | 2.00 | 1.33 | 1.25 | 0.75 | 1.00 | 1.25 | 2.00 | 0.00 | 0.50 | 1.00 | 0.33 | 0.75 | 1.61 | 28.33 |
| a | 0.67 | 0.75 | 1.00 | 1.50 | 2.25 | 2.25 | 2.00 | 1.67 | 0.25 | 0.75 | 1.50 | 0.33 | 2.67 | 2.00 | 2.50 | 1.75 | 1.67 | 2.00 | 2.00 | 0.00 | 0.00 | 0.50 | 1.25 | 2.75 | 2.75 | 0.67 | 0.00 | 0.50 | 0.00 | 0.67 | 0.50 | 1.26 | 22.14 |
| 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 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.67 | 0.50 | 0.25 | 0.50 | 0.67 | 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 | 0.31 | 5.43 |
| x | 0.00 | 1.00 | 1.33 | 1.75 | 1.00 | 0.50 | 2.50 | 2.67 | 2.25 | 2.00 | 4.25 | 5.67 | 3.67 | 4.75 | 5.75 | 4.50 | 4.00 | 3.75 | 2.50 | 2.00 | 1.33 | 2.00 | 1.50 | 2.00 | 2.25 | 3.00 | 4.00 | 2.00 | 2.00 | 0.33 | 1.75 | 2.52 | 44.19 |
| o | 1.67 | 0.25 | 1.33 | 2.50 | 2.75 | 3.00 | 2.75 | 2.33 | 3.00 | 4.75 | 4.50 | 4.33 | 4.00 | 4.50 | 1.25 | 1.50 | 1.67 | 3.25 | 3.25 | 2.33 | 3.00 | 3.25 | 2.75 | 2.25 | 2.75 | 2.33 | 1.00 | 0.00 | 0.75 | 2.33 | 1.75 | 2.49 | 43.67 |
| i | 0.00 | 0.50 | 0.00 | 0.25 | 0.50 | 0.00 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.75 | 0.50 | 0.67 | 0.00 | 0.25 | 0.00 | 0.00 | 0.25 | 0.50 | 0.50 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 3.49 |
| c | 0.00 | 0.25 | 1.00 | 1.00 | 1.25 | 2.00 | 1.75 | 1.33 | 1.00 | 1.00 | 1.00 | 1.00 | 0.67 | 0.75 | 0.50 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.49 | 8.64 |
| CV | 15.00 | 26.25 | 37.00 | 47.25 | 90.00 | 110.75 | 135.00 | 123.00 | 102.50 | 114.50 | 111.75 | 108.33 | 96.33 | 103.00 | 85.75 | 81.00 | 76.67 | 55.00 | 33.00 | 26.67 | 24.00 | 36.75 | 33.75 | 54.50 | 39.75 | 34.67 | 9.00 | 9.50 | 13.25 | 12.00 | 15.00 | 60.03 | 100 |
| CVn | 0.00 | 0.00 | 3.67 | 11.50 | 50.25 | 72.75 | 79.00 | 81.00 | 68.75 | 72.50 | 73.00 | 72.00 | 59.00 | 63.75 | 48.00 | 48.75 | 48.00 | 16.00 | 12.00 | 9.33 | 9.67 | 23.75 | 19.25 | 20.75 | 13.00 | 14.00 | 5.00 | 0.00 | 2.25 | 2.00 | 1.50 | 32.27 | 53.76 |
| CVs | 15.00 | 26.25 | 33.33 | 35.75 | 39.75 | 38.00 | 56.00 | 42.00 | 33.75 | 42.00 | 38.75 | 36.33 | 37.33 | 39.25 | 37.75 | 32.25 | 28.67 | 39.00 | 21.00 | 17.33 | 14.33 | 13.00 | 14.50 | 33.75 | 26.75 | 20.67 | 4.00 | 9.50 | 11.00 | 10.00 | 13.50 | 27.76 | 46.24 |
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