Statistics of sunspot activity
May, 2013
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 | 123.67 | 86.00 | 102.00 | 141.50 | 98.00 | 108.33 | 110.00 | 105.00 | 114.67 | 106.67 | 134.33 | 135.33 | 118.50 | 147.50 | 185.50 | 201.00 | 187.33 | 151.00 | 113.33 | 99.67 | 141.00 | 123.00 | 110.67 | 107.00 | 90.00 | 84.67 | 91.67 | 80.67 | 80.67 | 72.50 | 62.00 | 116.55 | 100 |
| Wn | 37.33 | 38.50 | 46.67 | 70.00 | 47.67 | 40.67 | 33.50 | 41.00 | 53.00 | 74.00 | 80.00 | 88.33 | 68.50 | 92.50 | 112.00 | 111.50 | 104.33 | 94.00 | 60.67 | 63.00 | 89.50 | 75.50 | 57.00 | 55.00 | 36.00 | 26.67 | 34.33 | 24.67 | 24.33 | 25.00 | 12.50 | 58.63 | 50.31 |
| Ws | 86.33 | 47.50 | 55.33 | 71.50 | 50.33 | 67.67 | 76.50 | 64.00 | 61.67 | 32.67 | 54.33 | 47.00 | 50.00 | 55.00 | 73.50 | 89.50 | 83.00 | 57.00 | 52.67 | 36.67 | 51.50 | 47.50 | 53.67 | 52.00 | 54.00 | 58.00 | 57.33 | 56.00 | 56.33 | 47.50 | 49.50 | 57.92 | 49.69 |
| n | 6.67 | 4.50 | 4.67 | 8.00 | 5.67 | 7.00 | 7.00 | 8.00 | 8.00 | 8.00 | 9.67 | 8.00 | 7.50 | 8.50 | 9.00 | 11.00 | 10.67 | 9.00 | 6.33 | 6.67 | 9.00 | 8.00 | 6.33 | 5.67 | 4.67 | 4.33 | 5.33 | 5.33 | 5.67 | 6.00 | 5.00 | 7.07 | 100 |
| A | 1.33 | 0.50 | 0.33 | 1.50 | 0.33 | 1.33 | 1.00 | 2.00 | 1.67 | 2.33 | 0.67 | 0.67 | 1.00 | 1.00 | 1.00 | 1.00 | 1.67 | 0.50 | 0.67 | 1.00 | 1.00 | 1.50 | 1.00 | 0.67 | 1.00 | 0.67 | 1.00 | 1.67 | 2.00 | 2.50 | 0.50 | 1.13 | 15.97 |
| B | 1.33 | 0.00 | 0.33 | 1.00 | 0.33 | 0.33 | 0.50 | 0.00 | 1.00 | 0.33 | 1.33 | 0.67 | 0.50 | 1.00 | 2.00 | 4.00 | 2.00 | 2.00 | 0.00 | 0.67 | 1.00 | 0.50 | 2.00 | 1.00 | 0.67 | 0.00 | 0.67 | 0.00 | 1.00 | 1.50 | 2.00 | 0.96 | 13.54 |
| C | 1.00 | 1.50 | 0.33 | 0.00 | 0.67 | 2.00 | 2.00 | 0.00 | 2.00 | 1.67 | 3.00 | 1.00 | 1.00 | 1.50 | 2.00 | 4.00 | 2.33 | 0.50 | 2.00 | 1.33 | 2.50 | 2.00 | 0.67 | 0.67 | 0.33 | 0.67 | 0.67 | 1.33 | 1.67 | 0.00 | 0.50 | 1.32 | 18.63 |
| D | 1.00 | 0.00 | 0.67 | 3.00 | 2.33 | 2.00 | 3.00 | 5.00 | 2.33 | 1.67 | 2.00 | 4.33 | 3.50 | 3.50 | 3.00 | 1.50 | 2.67 | 6.00 | 1.00 | 1.67 | 2.50 | 2.00 | 1.00 | 2.00 | 1.00 | 1.00 | 0.67 | 0.33 | 0.33 | 0.00 | 0.00 | 1.97 | 27.83 |
| E | 1.33 | 0.50 | 1.33 | 0.50 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.00 | 0.00 | 1.00 | 0.00 | 1.00 | 0.00 | 0.33 | 0.33 | 0.00 | 0.00 | 1.00 | 1.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.38 | 5.32 |
| F | 0.00 | 0.50 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 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 | 0.04 | 0.53 |
| G | 0.67 | 1.00 | 0.67 | 0.50 | 0.33 | 0.33 | 0.00 | 0.00 | 0.33 | 0.00 | 0.33 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.33 | 0.00 | 0.67 | 0.33 | 0.00 | 0.50 | 0.00 | 0.33 | 0.00 | 0.67 | 0.67 | 0.33 | 0.00 | 0.00 | 0.00 | 0.27 | 3.88 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 1.00 | 1.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 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 | 0.10 | 1.44 |
| I | 0.00 | 0.50 | 1.00 | 1.50 | 0.33 | 0.67 | 0.50 | 1.00 | 0.33 | 1.00 | 1.33 | 0.67 | 1.50 | 0.50 | 0.00 | 0.50 | 0.33 | 0.00 | 1.33 | 1.33 | 2.00 | 1.50 | 0.67 | 0.00 | 0.67 | 1.00 | 1.67 | 1.67 | 0.67 | 2.00 | 2.00 | 0.91 | 12.85 |
| x | 2.67 | 0.50 | 0.67 | 2.50 | 0.67 | 1.67 | 1.50 | 2.00 | 2.67 | 2.67 | 2.00 | 1.33 | 1.50 | 2.00 | 3.00 | 5.00 | 3.67 | 2.50 | 0.67 | 1.67 | 2.00 | 2.00 | 3.00 | 1.67 | 1.67 | 0.67 | 1.67 | 1.67 | 3.00 | 4.00 | 2.50 | 2.09 | 29.51 |
| r | 0.33 | 0.00 | 0.00 | 0.50 | 0.67 | 0.67 | 0.00 | 0.00 | 1.00 | 1.33 | 1.00 | 0.33 | 0.00 | 0.50 | 0.00 | 0.00 | 1.00 | 0.50 | 1.33 | 0.00 | 2.00 | 1.50 | 0.67 | 2.00 | 0.33 | 0.67 | 0.33 | 0.67 | 0.67 | 0.00 | 0.50 | 0.60 | 8.44 |
| s | 1.67 | 1.50 | 1.67 | 1.50 | 1.33 | 1.67 | 3.50 | 4.00 | 2.67 | 2.00 | 2.67 | 1.67 | 4.00 | 1.00 | 3.00 | 2.00 | 2.00 | 1.50 | 1.00 | 3.00 | 4.00 | 2.00 | 1.67 | 0.67 | 1.67 | 1.00 | 2.33 | 2.67 | 1.67 | 1.00 | 1.00 | 2.03 | 28.75 |
| a | 1.00 | 1.50 | 1.33 | 2.50 | 2.00 | 2.00 | 1.00 | 1.00 | 0.67 | 1.00 | 1.67 | 3.67 | 0.00 | 2.50 | 1.50 | 3.00 | 3.00 | 4.00 | 2.67 | 1.67 | 1.00 | 2.00 | 1.00 | 1.33 | 0.67 | 1.67 | 1.00 | 0.33 | 0.33 | 1.00 | 1.00 | 1.58 | 22.36 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.33 | 0.00 | 0.00 | 1.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 1.44 |
| k | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 2.00 | 1.50 | 1.00 | 1.00 | 1.00 | 0.50 | 0.67 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 9.51 |
| x | 1.33 | 1.00 | 1.33 | 3.00 | 0.67 | 2.00 | 1.50 | 3.00 | 2.33 | 4.33 | 3.00 | 1.33 | 2.50 | 2.00 | 1.00 | 1.50 | 2.00 | 0.50 | 2.33 | 2.33 | 3.00 | 3.00 | 1.67 | 0.67 | 1.67 | 1.67 | 2.67 | 3.33 | 2.67 | 4.50 | 2.50 | 2.14 | 30.27 |
| o | 3.33 | 2.50 | 1.67 | 3.50 | 3.67 | 4.00 | 5.00 | 5.00 | 5.33 | 3.67 | 6.00 | 5.33 | 3.50 | 5.50 | 7.00 | 7.50 | 6.67 | 8.50 | 3.33 | 3.33 | 4.50 | 3.00 | 3.33 | 3.67 | 1.67 | 1.67 | 2.00 | 1.33 | 2.67 | 1.50 | 2.50 | 3.94 | 55.74 |
| i | 0.67 | 0.00 | 1.00 | 1.50 | 1.00 | 1.00 | 0.50 | 0.00 | 0.33 | 0.00 | 0.67 | 1.00 | 1.50 | 0.50 | 0.00 | 2.00 | 1.67 | 0.00 | 0.33 | 1.00 | 1.50 | 2.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.67 | 0.67 | 0.33 | 0.00 | 0.00 | 0.77 | 10.87 |
| c | 1.33 | 1.00 | 0.67 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.50 | 1.00 | 0.00 | 0.33 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.22 | 3.12 |
| CV | 118.00 | 97.00 | 105.33 | 125.50 | 121.67 | 106.00 | 119.00 | 149.00 | 115.33 | 94.00 | 167.00 | 149.33 | 159.50 | 179.50 | 164.00 | 111.50 | 151.33 | 140.50 | 93.00 | 93.33 | 94.00 | 96.50 | 67.00 | 73.67 | 71.67 | 64.67 | 54.33 | 46.00 | 30.67 | 22.50 | 24.00 | 103.38 | 100 |
| CVn | 22.33 | 33.00 | 27.00 | 50.50 | 47.00 | 33.33 | 27.50 | 51.00 | 41.33 | 39.33 | 86.67 | 108.00 | 120.00 | 130.50 | 132.00 | 71.50 | 101.33 | 82.00 | 59.00 | 65.67 | 64.00 | 56.50 | 30.33 | 38.67 | 25.00 | 21.00 | 18.33 | 14.33 | 7.67 | 3.00 | 3.00 | 51.96 | 50.26 |
| CVs | 95.67 | 64.00 | 78.33 | 75.00 | 74.67 | 72.67 | 91.50 | 98.00 | 74.00 | 54.67 | 80.33 | 41.33 | 39.50 | 49.00 | 32.00 | 40.00 | 50.00 | 58.50 | 34.00 | 27.67 | 30.00 | 40.00 | 36.67 | 35.00 | 46.67 | 43.67 | 36.00 | 31.67 | 23.00 | 19.50 | 21.00 | 51.42 | 49.74 |
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