Statistics of sunspot activity
August, 2000
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 | 126.67 | 129.25 | 137.75 | 130.00 | 154.75 | 168.50 | 197.50 | 178.33 | 165.25 | 149.33 | 178.00 | 201.25 | 211.25 | 270.25 | 202.00 | 231.50 | 233.67 | 194.50 | 170.75 | 133.00 | 90.50 | 79.00 | 76.33 | 86.50 | 105.25 | 107.00 | 134.00 | 163.00 | 170.00 | 189.00 | 198.00 | 160.07 | 100 |
| Wn | 45.67 | 56.00 | 62.75 | 49.67 | 58.75 | 54.50 | 85.00 | 96.33 | 93.50 | 89.33 | 108.33 | 135.50 | 134.25 | 178.25 | 133.50 | 131.00 | 129.67 | 113.00 | 94.50 | 65.75 | 43.50 | 35.00 | 33.33 | 42.00 | 66.75 | 53.25 | 58.67 | 88.50 | 93.67 | 126.33 | 136.67 | 86.87 | 54.27 |
| Ws | 81.00 | 73.25 | 75.00 | 80.33 | 96.00 | 114.00 | 112.50 | 82.00 | 71.75 | 60.00 | 69.67 | 65.75 | 77.00 | 92.00 | 68.50 | 100.50 | 104.00 | 81.50 | 76.25 | 67.25 | 47.00 | 44.00 | 43.00 | 44.50 | 38.50 | 53.75 | 75.33 | 74.50 | 76.33 | 62.67 | 61.33 | 73.20 | 45.73 |
| n | 8.00 | 9.75 | 10.25 | 10.00 | 10.50 | 12.00 | 12.50 | 11.33 | 9.75 | 10.00 | 12.00 | 12.25 | 14.25 | 16.75 | 11.75 | 12.50 | 11.67 | 9.75 | 9.75 | 9.50 | 6.75 | 5.75 | 5.33 | 6.50 | 7.50 | 6.75 | 9.00 | 10.00 | 9.67 | 10.00 | 12.00 | 10.11 | 100 |
| A | 0.00 | 0.50 | 0.25 | 1.33 | 0.25 | 0.50 | 1.00 | 1.00 | 1.50 | 0.67 | 1.00 | 0.75 | 1.75 | 2.50 | 0.50 | 2.00 | 2.00 | 0.75 | 1.00 | 1.50 | 0.75 | 1.00 | 0.00 | 0.50 | 0.50 | 1.25 | 2.00 | 0.50 | 0.67 | 2.67 | 1.67 | 1.04 | 10.29 |
| B | 1.00 | 0.00 | 0.75 | 0.33 | 1.50 | 0.50 | 0.50 | 1.67 | 0.25 | 1.00 | 0.33 | 1.25 | 2.00 | 3.50 | 0.25 | 1.75 | 2.33 | 2.00 | 1.00 | 0.50 | 0.75 | 0.00 | 0.00 | 0.50 | 0.50 | 0.00 | 0.33 | 0.50 | 0.67 | 0.33 | 0.00 | 0.84 | 8.29 |
| C | 1.67 | 3.75 | 4.00 | 3.33 | 2.75 | 2.50 | 2.75 | 2.67 | 2.25 | 4.33 | 4.00 | 4.50 | 4.25 | 4.75 | 3.00 | 2.50 | 3.00 | 2.75 | 4.25 | 2.00 | 0.75 | 1.00 | 0.33 | 1.25 | 2.25 | 0.75 | 1.00 | 0.50 | 0.33 | 1.33 | 2.33 | 2.48 | 24.51 |
| D | 3.33 | 3.25 | 1.50 | 1.00 | 2.50 | 3.00 | 4.25 | 2.67 | 2.75 | 2.33 | 3.33 | 3.75 | 2.00 | 2.00 | 4.00 | 3.25 | 2.67 | 2.00 | 1.25 | 2.25 | 2.00 | 1.25 | 2.67 | 2.25 | 2.50 | 2.25 | 2.00 | 2.50 | 2.00 | 0.67 | 1.67 | 2.41 | 23.87 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.75 | 1.00 | 0.25 | 0.33 | 1.00 | 0.50 | 0.50 | 0.25 | 0.25 | 0.25 | 0.67 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 1.67 | 1.67 | 1.33 | 0.41 | 4.04 |
| F | 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 | 0.25 | 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 | 0.02 | 0.16 |
| G | 0.67 | 0.00 | 0.00 | 0.00 | 0.75 | 0.50 | 0.00 | 0.33 | 0.50 | 0.33 | 0.67 | 0.50 | 0.25 | 0.00 | 0.00 | 0.50 | 0.67 | 1.00 | 0.00 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 1.50 | 1.00 | 1.67 | 1.33 | 0.44 | 4.33 |
| 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 |
| I | 1.33 | 2.25 | 3.75 | 4.00 | 2.75 | 4.50 | 3.25 | 2.00 | 2.00 | 1.00 | 1.67 | 1.00 | 3.50 | 3.75 | 3.75 | 2.00 | 0.33 | 0.50 | 1.75 | 2.50 | 2.50 | 2.50 | 2.33 | 2.00 | 1.75 | 2.50 | 3.00 | 4.00 | 3.33 | 1.67 | 3.67 | 2.48 | 24.51 |
| x | 1.00 | 0.50 | 1.00 | 1.67 | 1.75 | 1.00 | 1.50 | 2.67 | 1.75 | 1.67 | 1.33 | 2.00 | 3.75 | 6.00 | 0.75 | 3.75 | 4.33 | 2.75 | 2.00 | 2.00 | 1.50 | 1.00 | 0.00 | 1.00 | 1.00 | 1.25 | 2.33 | 1.00 | 1.33 | 3.00 | 1.67 | 1.88 | 18.58 |
| r | 0.33 | 1.75 | 0.75 | 0.33 | 0.50 | 1.00 | 2.00 | 0.00 | 0.50 | 1.33 | 2.00 | 0.50 | 0.50 | 0.75 | 1.00 | 1.50 | 1.33 | 0.75 | 1.25 | 1.50 | 0.25 | 0.25 | 1.00 | 0.25 | 1.00 | 0.25 | 0.67 | 0.00 | 0.00 | 0.00 | 2.67 | 0.84 | 8.27 |
| s | 5.67 | 6.00 | 5.75 | 6.00 | 5.00 | 7.50 | 5.00 | 4.67 | 3.50 | 4.00 | 5.00 | 4.50 | 5.50 | 6.25 | 7.25 | 4.25 | 3.00 | 4.00 | 3.75 | 5.50 | 1.75 | 2.25 | 2.67 | 3.25 | 2.50 | 3.25 | 3.33 | 4.00 | 2.67 | 3.00 | 4.00 | 4.35 | 42.98 |
| a | 1.00 | 1.50 | 2.75 | 2.00 | 3.25 | 2.50 | 3.75 | 3.67 | 3.50 | 2.67 | 3.00 | 5.25 | 4.50 | 3.75 | 2.75 | 3.00 | 3.00 | 2.25 | 2.75 | 0.50 | 3.25 | 2.25 | 1.67 | 2.00 | 3.00 | 2.00 | 2.67 | 5.00 | 5.67 | 4.00 | 3.67 | 2.98 | 29.51 |
| 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 | 0.00 | 0.00 | 0.25 | 0.33 | 0.50 | 0.33 | 0.67 | 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 | 0.07 | 0.66 |
| x | 1.33 | 2.75 | 4.00 | 5.33 | 3.00 | 5.00 | 4.25 | 3.00 | 3.50 | 1.67 | 2.67 | 1.75 | 5.25 | 6.25 | 4.25 | 4.00 | 2.33 | 1.25 | 2.75 | 4.00 | 3.25 | 3.50 | 2.33 | 2.50 | 2.25 | 3.75 | 5.00 | 4.50 | 4.00 | 4.33 | 5.33 | 3.52 | 34.80 |
| o | 6.67 | 7.00 | 6.25 | 4.67 | 7.25 | 6.50 | 7.50 | 7.33 | 5.25 | 7.67 | 8.33 | 8.75 | 7.50 | 9.50 | 6.50 | 7.75 | 8.00 | 7.75 | 6.25 | 5.50 | 3.50 | 2.25 | 3.00 | 3.50 | 5.25 | 2.25 | 3.33 | 4.50 | 4.00 | 3.67 | 5.33 | 5.89 | 58.21 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.75 | 1.00 | 1.00 | 0.67 | 0.67 | 1.75 | 1.50 | 0.75 | 0.75 | 0.75 | 1.33 | 0.75 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.50 | 0.67 | 1.00 | 1.33 | 1.33 | 1.00 | 0.63 | 6.22 |
| c | 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 | 0.25 | 0.25 | 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 | 0.33 | 0.67 | 0.33 | 0.08 | 0.77 |
| CV | 127.33 | 125.25 | 103.50 | 92.67 | 125.75 | 158.50 | 163.50 | 146.00 | 132.75 | 124.33 | 180.00 | 158.50 | 137.75 | 140.00 | 164.50 | 135.75 | 122.33 | 118.25 | 94.25 | 109.50 | 69.00 | 58.50 | 78.67 | 81.75 | 83.75 | 83.25 | 94.00 | 139.00 | 136.33 | 128.00 | 145.33 | 121.23 | 100 |
| CVn | 47.33 | 48.25 | 48.00 | 38.00 | 50.00 | 55.50 | 67.75 | 81.67 | 85.50 | 79.33 | 122.67 | 101.50 | 96.75 | 100.00 | 102.50 | 68.25 | 56.67 | 65.50 | 53.25 | 55.25 | 32.00 | 20.25 | 28.67 | 34.75 | 41.50 | 41.25 | 47.67 | 77.00 | 81.67 | 91.33 | 104.00 | 65.28 | 53.85 |
| CVs | 80.00 | 77.00 | 55.50 | 54.67 | 75.75 | 103.00 | 95.75 | 64.33 | 47.25 | 45.00 | 57.33 | 57.00 | 41.00 | 40.00 | 62.00 | 67.50 | 65.67 | 52.75 | 41.00 | 54.25 | 37.00 | 38.25 | 50.00 | 47.00 | 42.25 | 42.00 | 46.33 | 62.00 | 54.67 | 36.67 | 41.33 | 55.94 | 46.15 |
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