Statistics of sunspot activity
December, 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 | 147.67 | 137.67 | 167.00 | 101.33 | 93.67 | 86.50 | 103.75 | 64.50 | 75.75 | 73.00 | 87.25 | 104.00 | 151.00 | 136.33 | 177.67 | 204.67 | 208.00 | 156.75 | 132.50 | 163.67 | 148.00 | 139.50 | 132.00 | 125.00 | 175.00 | 168.67 | 157.67 | 156.50 | 117.00 | 131.25 | 141.50 | 134.35 | 100 |
| Wn | 82.00 | 68.00 | 67.00 | 66.00 | 58.33 | 55.50 | 62.25 | 44.75 | 64.25 | 39.00 | 74.50 | 83.75 | 108.50 | 94.00 | 124.33 | 145.33 | 138.25 | 97.25 | 79.75 | 114.33 | 105.50 | 97.00 | 89.00 | 83.00 | 100.00 | 93.67 | 81.67 | 83.50 | 55.50 | 62.50 | 54.50 | 83.00 | 61.78 |
| Ws | 65.67 | 69.67 | 100.00 | 35.33 | 35.33 | 31.00 | 41.50 | 19.75 | 11.50 | 34.00 | 12.75 | 20.25 | 42.50 | 42.33 | 53.33 | 59.33 | 69.75 | 59.50 | 52.75 | 49.33 | 42.50 | 42.50 | 43.00 | 42.00 | 75.00 | 75.00 | 76.00 | 73.00 | 61.50 | 68.75 | 87.00 | 51.35 | 38.22 |
| n | 8.33 | 8.67 | 11.50 | 7.67 | 6.67 | 6.00 | 7.25 | 4.75 | 5.25 | 6.00 | 6.00 | 6.75 | 8.25 | 8.67 | 10.33 | 10.67 | 12.25 | 10.75 | 7.75 | 9.33 | 9.50 | 8.00 | 8.33 | 7.67 | 9.00 | 8.33 | 8.33 | 7.00 | 6.50 | 7.50 | 7.00 | 8.06 | 100 |
| A | 1.00 | 1.33 | 0.50 | 1.00 | 3.00 | 1.25 | 2.00 | 1.50 | 1.25 | 2.00 | 0.25 | 1.00 | 1.00 | 0.67 | 1.67 | 0.67 | 1.75 | 1.25 | 0.75 | 1.00 | 2.00 | 1.50 | 1.33 | 1.00 | 1.50 | 0.33 | 1.00 | 0.00 | 0.75 | 0.50 | 0.50 | 1.14 | 14.10 |
| B | 0.33 | 1.00 | 0.00 | 1.00 | 0.00 | 0.25 | 3.00 | 0.50 | 0.00 | 1.00 | 0.25 | 0.50 | 0.75 | 1.00 | 2.33 | 3.00 | 0.75 | 1.00 | 0.25 | 0.67 | 1.50 | 0.50 | 0.00 | 0.00 | 0.50 | 0.33 | 0.67 | 0.50 | 0.00 | 0.00 | 0.00 | 0.70 | 8.63 |
| C | 1.00 | 0.67 | 2.00 | 1.67 | 1.33 | 0.25 | 0.50 | 1.00 | 1.25 | 1.00 | 2.00 | 1.25 | 2.50 | 2.67 | 1.33 | 3.33 | 2.75 | 1.00 | 1.50 | 1.67 | 2.00 | 1.00 | 2.67 | 2.33 | 0.50 | 0.00 | 1.67 | 1.00 | 0.75 | 1.75 | 0.00 | 1.43 | 17.73 |
| D | 2.67 | 2.33 | 3.50 | 0.67 | 1.00 | 1.25 | 1.00 | 1.25 | 1.75 | 1.00 | 2.50 | 2.50 | 2.50 | 2.67 | 2.00 | 1.67 | 2.25 | 2.75 | 3.00 | 2.33 | 0.50 | 1.00 | 1.33 | 1.00 | 2.00 | 4.00 | 2.00 | 1.00 | 1.50 | 2.25 | 3.00 | 1.94 | 24.07 |
| E | 1.33 | 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 | 0.67 | 0.33 | 0.75 | 0.00 | 0.25 | 0.00 | 0.00 | 0.50 | 0.67 | 1.00 | 0.50 | 0.67 | 0.67 | 2.00 | 0.00 | 0.50 | 1.00 | 0.37 | 4.60 |
| 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 | 0.00 | 0.50 | 0.50 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.53 |
| G | 0.33 | 0.33 | 1.00 | 0.33 | 0.00 | 0.50 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.67 | 0.67 | 0.75 | 1.50 | 0.75 | 1.33 | 1.50 | 1.00 | 0.33 | 0.00 | 0.50 | 0.33 | 0.00 | 0.50 | 2.00 | 1.50 | 1.00 | 0.58 | 7.17 |
| 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 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.13 |
| I | 1.67 | 2.33 | 4.50 | 3.00 | 1.33 | 2.50 | 0.00 | 0.50 | 1.00 | 1.00 | 1.00 | 1.50 | 1.50 | 1.33 | 1.67 | 1.00 | 3.25 | 3.25 | 1.25 | 2.33 | 1.50 | 2.00 | 1.67 | 2.33 | 3.50 | 2.67 | 2.00 | 2.00 | 1.50 | 1.00 | 1.50 | 1.86 | 23.03 |
| x | 1.33 | 2.33 | 0.50 | 2.00 | 3.00 | 1.50 | 5.00 | 2.00 | 1.25 | 3.00 | 0.50 | 1.50 | 1.75 | 1.67 | 4.00 | 3.67 | 2.50 | 2.25 | 1.00 | 1.67 | 3.50 | 2.00 | 1.33 | 1.00 | 2.00 | 0.67 | 1.67 | 0.50 | 0.75 | 0.50 | 0.50 | 1.83 | 22.73 |
| r | 0.33 | 0.33 | 0.50 | 1.00 | 0.00 | 1.25 | 0.25 | 0.25 | 0.75 | 0.00 | 0.25 | 0.25 | 1.00 | 0.33 | 0.00 | 0.00 | 0.75 | 0.75 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.50 | 1.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.41 | 5.07 |
| s | 4.00 | 5.00 | 9.00 | 4.00 | 2.00 | 1.50 | 0.00 | 1.00 | 1.75 | 2.00 | 2.25 | 3.25 | 2.25 | 3.00 | 1.67 | 1.67 | 3.50 | 4.25 | 4.00 | 2.67 | 3.50 | 3.50 | 3.00 | 4.67 | 3.50 | 4.00 | 3.33 | 3.00 | 2.50 | 3.00 | 3.50 | 3.10 | 38.50 |
| a | 2.00 | 1.00 | 1.50 | 0.67 | 1.67 | 1.75 | 2.00 | 1.50 | 1.50 | 1.00 | 3.00 | 1.75 | 3.25 | 3.67 | 4.67 | 5.33 | 5.50 | 3.50 | 2.75 | 3.00 | 1.50 | 1.50 | 3.00 | 1.00 | 2.00 | 2.00 | 2.67 | 2.50 | 2.25 | 2.75 | 1.50 | 2.38 | 29.47 |
| h | 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 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.25 | 0.00 | 0.03 | 0.37 |
| k | 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 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.33 | 1.00 | 1.00 | 1.00 | 1.00 | 0.31 | 3.87 |
| x | 2.67 | 3.67 | 5.00 | 4.00 | 4.33 | 3.75 | 2.00 | 2.00 | 2.25 | 3.00 | 1.25 | 2.50 | 2.50 | 2.00 | 3.33 | 1.67 | 5.00 | 4.50 | 2.00 | 3.33 | 3.50 | 3.50 | 3.00 | 3.33 | 5.00 | 3.00 | 3.33 | 2.00 | 2.25 | 1.50 | 2.00 | 3.01 | 37.27 |
| o | 4.00 | 4.00 | 6.50 | 3.67 | 2.33 | 2.25 | 5.25 | 2.50 | 3.00 | 3.00 | 4.25 | 3.75 | 4.50 | 6.00 | 5.33 | 7.67 | 6.50 | 6.25 | 4.75 | 5.33 | 5.50 | 3.50 | 4.33 | 3.33 | 3.00 | 4.33 | 4.00 | 2.50 | 3.75 | 5.25 | 4.00 | 4.33 | 53.73 |
| i | 1.33 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.50 | 0.50 | 1.25 | 0.67 | 1.67 | 1.33 | 0.75 | 0.00 | 1.00 | 0.67 | 0.50 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 2.50 | 0.50 | 0.75 | 0.50 | 0.70 | 8.67 |
| c | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.03 | 0.33 |
| CV | 146.33 | 113.33 | 170.50 | 68.67 | 48.00 | 56.50 | 45.25 | 40.75 | 56.00 | 44.00 | 80.25 | 82.75 | 87.25 | 103.67 | 105.67 | 100.33 | 132.00 | 132.00 | 120.75 | 137.00 | 119.00 | 124.50 | 124.00 | 117.00 | 95.00 | 127.00 | 115.33 | 134.00 | 120.25 | 148.50 | 156.00 | 104.89 | 100 |
| CVn | 83.00 | 47.67 | 69.50 | 42.00 | 36.00 | 34.25 | 25.00 | 27.75 | 45.75 | 31.00 | 69.50 | 61.75 | 60.00 | 68.67 | 71.33 | 67.67 | 78.00 | 76.75 | 68.75 | 85.00 | 79.00 | 84.00 | 83.00 | 75.33 | 46.50 | 57.00 | 53.33 | 56.00 | 47.75 | 63.25 | 60.50 | 59.84 | 57.05 |
| CVs | 63.33 | 65.67 | 101.00 | 26.67 | 12.00 | 22.25 | 20.25 | 13.00 | 10.25 | 13.00 | 10.75 | 21.00 | 27.25 | 35.00 | 34.33 | 32.67 | 54.00 | 55.25 | 52.00 | 52.00 | 40.00 | 40.50 | 41.00 | 41.67 | 48.50 | 70.00 | 62.00 | 78.00 | 72.50 | 85.25 | 95.50 | 45.05 | 42.95 |
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