Statistics of sunspot activity
July, 2001
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 | 107.00 | 118.00 | 129.33 | 105.00 | 85.50 | 59.00 | 69.25 | 85.25 | 114.50 | 111.00 | 99.00 | 127.75 | 149.75 | 146.50 | 133.67 | 150.25 | 186.67 | 175.50 | 163.75 | 171.33 | 137.25 | 154.67 | 155.50 | 124.25 | 95.67 | 79.33 | 89.25 | 74.75 | 67.33 | 66.00 | 70.75 | 116.22 | 100 |
| Wn | 48.00 | 55.25 | 71.00 | 66.75 | 48.25 | 39.00 | 35.75 | 31.00 | 46.00 | 53.00 | 45.00 | 59.00 | 77.25 | 68.75 | 59.33 | 72.00 | 82.67 | 87.50 | 83.50 | 90.67 | 79.00 | 84.00 | 90.50 | 70.75 | 50.00 | 47.67 | 50.75 | 33.00 | 28.33 | 15.67 | 23.75 | 57.84 | 49.77 |
| Ws | 59.00 | 62.75 | 58.33 | 38.25 | 37.25 | 20.00 | 33.50 | 54.25 | 68.50 | 58.00 | 54.00 | 68.75 | 72.50 | 77.75 | 74.33 | 78.25 | 104.00 | 88.00 | 80.25 | 80.67 | 58.25 | 70.67 | 65.00 | 53.50 | 45.67 | 31.67 | 38.50 | 41.75 | 39.00 | 50.33 | 47.00 | 58.38 | 50.23 |
| n | 8.75 | 9.25 | 9.67 | 8.00 | 6.75 | 4.50 | 4.25 | 4.75 | 6.50 | 7.50 | 6.75 | 9.00 | 10.50 | 9.00 | 8.33 | 9.50 | 11.33 | 12.75 | 11.75 | 11.00 | 8.00 | 7.33 | 9.50 | 7.50 | 6.00 | 5.00 | 5.50 | 5.00 | 4.67 | 4.33 | 4.00 | 7.63 | 100 |
| A | 0.50 | 0.50 | 1.00 | 0.75 | 1.25 | 0.50 | 0.25 | 0.25 | 1.50 | 1.25 | 0.25 | 1.00 | 1.75 | 0.00 | 0.00 | 0.00 | 1.33 | 1.25 | 0.50 | 1.33 | 0.00 | 0.33 | 0.50 | 1.00 | 0.67 | 0.67 | 0.75 | 0.00 | 0.67 | 0.33 | 0.75 | 0.67 | 8.80 |
| B | 0.25 | 0.25 | 0.67 | 1.25 | 0.75 | 0.50 | 1.00 | 0.50 | 0.00 | 1.00 | 0.75 | 0.00 | 0.50 | 1.50 | 0.33 | 0.25 | 1.00 | 1.75 | 0.50 | 0.67 | 0.50 | 0.00 | 0.50 | 0.50 | 0.33 | 0.33 | 0.25 | 0.50 | 1.33 | 0.33 | 0.25 | 0.59 | 7.71 |
| C | 2.25 | 3.00 | 3.33 | 1.00 | 1.25 | 1.00 | 0.75 | 1.50 | 1.00 | 0.75 | 2.00 | 2.75 | 2.25 | 1.50 | 0.67 | 1.50 | 1.67 | 3.75 | 4.25 | 2.00 | 0.50 | 0.67 | 1.00 | 1.50 | 1.33 | 0.00 | 0.25 | 0.75 | 0.33 | 0.67 | 0.00 | 1.46 | 19.08 |
| D | 1.25 | 1.50 | 0.67 | 1.50 | 1.00 | 0.50 | 1.50 | 2.25 | 3.75 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 3.00 | 3.50 | 3.33 | 1.75 | 0.00 | 1.33 | 2.75 | 2.33 | 3.00 | 0.75 | 0.67 | 1.00 | 1.50 | 1.25 | 0.67 | 1.67 | 1.75 | 1.83 | 23.94 |
| 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 | 0.50 | 1.00 | 1.00 | 1.33 | 0.75 | 1.00 | 1.33 | 0.50 | 0.67 | 0.50 | 0.75 | 0.67 | 0.00 | 0.50 | 0.00 | 0.33 | 0.00 | 0.75 | 0.37 | 4.89 |
| 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 | 0.33 | 0.00 | 0.33 | 0.50 | 0.25 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.08 | 1.02 |
| G | 0.25 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.75 | 0.00 | 0.00 | 1.00 | 0.67 | 0.50 | 1.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.33 | 0.67 | 0.25 | 0.75 | 0.67 | 0.67 | 0.50 | 0.30 | 3.91 |
| 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 | 0.25 | 0.50 | 0.67 | 0.00 | 0.67 | 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 | 0.08 | 1.09 |
| I | 4.25 | 4.00 | 4.00 | 3.00 | 2.50 | 2.00 | 0.75 | 0.25 | 0.25 | 2.00 | 1.25 | 2.50 | 2.50 | 2.50 | 2.67 | 2.25 | 1.33 | 2.75 | 4.25 | 4.00 | 3.25 | 3.00 | 3.50 | 2.75 | 1.67 | 2.00 | 2.00 | 1.75 | 0.67 | 0.33 | 0.00 | 2.26 | 29.54 |
| x | 0.75 | 0.75 | 1.67 | 2.00 | 2.00 | 1.00 | 1.25 | 0.75 | 1.50 | 2.25 | 1.00 | 1.00 | 2.25 | 1.50 | 0.33 | 0.25 | 2.33 | 3.00 | 1.00 | 2.00 | 0.50 | 0.33 | 1.00 | 1.50 | 1.00 | 1.00 | 1.00 | 0.50 | 2.00 | 0.67 | 1.00 | 1.26 | 16.51 |
| r | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.25 | 0.00 | 0.50 | 0.50 | 0.75 | 0.00 | 0.50 | 0.00 | 0.25 | 0.00 | 1.00 | 0.75 | 1.00 | 0.50 | 0.33 | 1.00 | 0.25 | 0.67 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.31 | 4.01 |
| s | 5.00 | 4.25 | 4.33 | 2.25 | 2.50 | 2.50 | 1.50 | 1.75 | 2.75 | 3.00 | 3.00 | 4.00 | 4.25 | 3.25 | 4.67 | 6.50 | 3.67 | 4.50 | 6.75 | 2.00 | 4.00 | 4.00 | 4.50 | 4.00 | 1.33 | 2.33 | 2.50 | 3.25 | 1.00 | 1.33 | 1.25 | 3.29 | 43.06 |
| a | 3.00 | 4.25 | 3.67 | 3.75 | 2.00 | 1.00 | 1.50 | 2.00 | 2.25 | 1.75 | 2.25 | 3.00 | 3.75 | 3.25 | 2.67 | 2.50 | 4.67 | 3.75 | 3.00 | 6.00 | 3.00 | 2.67 | 3.00 | 1.50 | 2.67 | 1.00 | 2.00 | 0.25 | 1.67 | 2.33 | 1.75 | 2.64 | 34.58 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.67 | 0.25 | 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 | 0.06 | 0.74 |
| 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 | 0.50 | 0.67 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 1.09 |
| x | 4.75 | 4.50 | 5.00 | 3.75 | 3.75 | 2.50 | 1.00 | 0.50 | 1.75 | 3.25 | 1.50 | 3.50 | 4.50 | 3.00 | 3.33 | 2.25 | 3.33 | 4.25 | 5.00 | 5.33 | 3.25 | 3.33 | 4.00 | 3.75 | 2.33 | 2.67 | 2.75 | 1.75 | 1.33 | 0.67 | 0.75 | 3.01 | 39.44 |
| o | 4.00 | 4.75 | 4.67 | 4.25 | 3.00 | 2.00 | 3.25 | 4.00 | 4.25 | 4.00 | 5.25 | 5.50 | 5.75 | 5.50 | 4.00 | 6.25 | 6.33 | 7.50 | 5.75 | 4.00 | 4.25 | 2.67 | 4.50 | 2.75 | 2.67 | 1.33 | 1.75 | 3.25 | 3.00 | 3.33 | 2.50 | 4.06 | 53.24 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.50 | 1.00 | 1.00 | 1.67 | 1.00 | 1.00 | 1.67 | 0.50 | 1.33 | 1.00 | 0.75 | 1.00 | 1.00 | 1.00 | 0.00 | 0.33 | 0.33 | 0.75 | 0.54 | 7.11 |
| c | 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 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.21 |
| CV | 94.75 | 95.75 | 83.67 | 78.25 | 56.75 | 42.00 | 49.50 | 65.25 | 99.75 | 83.50 | 84.50 | 111.00 | 127.25 | 122.75 | 151.33 | 164.00 | 176.00 | 146.25 | 140.00 | 114.67 | 118.25 | 111.33 | 126.50 | 92.50 | 77.33 | 83.67 | 73.50 | 67.00 | 49.00 | 68.67 | 69.25 | 97.55 | 100 |
| CVn | 41.25 | 46.25 | 46.67 | 51.25 | 32.50 | 29.50 | 25.75 | 24.75 | 41.00 | 33.75 | 39.50 | 48.50 | 54.25 | 65.00 | 74.67 | 66.75 | 81.00 | 60.25 | 60.50 | 59.00 | 79.50 | 66.67 | 87.50 | 57.25 | 34.00 | 40.33 | 30.75 | 19.75 | 8.67 | 17.67 | 23.25 | 46.69 | 47.87 |
| CVs | 53.50 | 49.50 | 37.00 | 27.00 | 24.25 | 12.50 | 23.75 | 40.50 | 58.75 | 49.75 | 45.00 | 62.50 | 73.00 | 57.75 | 76.67 | 97.25 | 95.00 | 86.00 | 79.50 | 55.67 | 38.75 | 44.67 | 39.00 | 35.25 | 43.33 | 43.33 | 42.75 | 47.25 | 40.33 | 51.00 | 46.00 | 50.85 | 52.13 |
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