Statistics of sunspot activity
January, 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 | 123.25 | 140.50 | 127.50 | 147.75 | 147.00 | 173.67 | 183.67 | 136.50 | 152.67 | 134.00 | 167.67 | 167.00 | 146.33 | 161.33 | 125.33 | 108.00 | 82.67 | 91.00 | 108.00 | 88.00 | 98.00 | 117.50 | 161.00 | 183.25 | 148.00 | 123.00 | 134.33 | 114.50 | 140.50 | 123.00 | 128.50 | 134.95 | 100 |
| Wn | 40.75 | 45.75 | 52.00 | 78.75 | 94.00 | 98.67 | 105.00 | 99.75 | 115.00 | 116.75 | 144.67 | 149.75 | 139.00 | 157.67 | 125.33 | 102.00 | 71.67 | 68.00 | 66.67 | 32.50 | 24.33 | 17.00 | 34.75 | 43.75 | 36.00 | 23.50 | 45.67 | 47.50 | 52.50 | 68.33 | 91.00 | 77.03 | 57.08 |
| Ws | 82.50 | 94.75 | 75.50 | 69.00 | 53.00 | 75.00 | 78.67 | 36.75 | 37.67 | 17.25 | 23.00 | 17.25 | 7.33 | 3.67 | 0.00 | 6.00 | 11.00 | 23.00 | 41.33 | 55.50 | 73.67 | 100.50 | 126.25 | 139.50 | 112.00 | 99.50 | 88.67 | 67.00 | 88.00 | 54.67 | 37.50 | 57.92 | 42.92 |
| n | 6.25 | 7.75 | 8.25 | 10.50 | 11.00 | 12.33 | 12.67 | 9.75 | 11.00 | 8.75 | 9.33 | 8.50 | 8.00 | 7.67 | 6.33 | 5.50 | 5.00 | 5.67 | 7.00 | 5.50 | 6.33 | 7.00 | 9.00 | 9.25 | 8.33 | 6.50 | 7.33 | 7.50 | 9.00 | 8.00 | 7.00 | 8.13 | 100 |
| A | 0.00 | 0.25 | 1.00 | 2.50 | 1.33 | 0.33 | 0.67 | 0.50 | 2.33 | 1.75 | 1.33 | 0.25 | 0.67 | 1.33 | 2.00 | 1.00 | 1.00 | 0.67 | 0.67 | 0.50 | 0.33 | 0.50 | 0.75 | 1.00 | 0.67 | 0.75 | 0.33 | 1.00 | 2.50 | 1.33 | 0.50 | 0.96 | 11.81 |
| B | 0.00 | 0.00 | 0.00 | 0.75 | 0.00 | 0.33 | 1.33 | 0.50 | 0.33 | 0.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.33 | 1.67 | 1.00 | 1.00 | 1.00 | 3.00 | 1.50 | 0.67 | 0.25 | 0.67 | 0.50 | 0.50 | 0.67 | 1.50 | 0.60 | 7.34 |
| C | 1.50 | 1.50 | 2.00 | 3.50 | 1.33 | 3.67 | 4.00 | 2.75 | 2.67 | 2.00 | 0.33 | 2.75 | 2.33 | 3.00 | 0.67 | 0.50 | 0.00 | 1.33 | 1.67 | 2.00 | 2.33 | 0.00 | 2.25 | 2.75 | 3.00 | 2.00 | 0.67 | 2.00 | 1.50 | 2.00 | 2.00 | 1.94 | 23.81 |
| D | 2.25 | 1.50 | 1.25 | 0.25 | 2.67 | 3.67 | 3.67 | 3.25 | 2.67 | 2.50 | 2.00 | 2.25 | 1.67 | 1.33 | 0.67 | 1.00 | 2.00 | 1.67 | 1.33 | 1.00 | 2.33 | 4.50 | 2.00 | 3.00 | 1.33 | 1.25 | 4.67 | 3.00 | 3.50 | 2.00 | 1.00 | 2.17 | 26.65 |
| E | 1.00 | 1.00 | 0.50 | 0.25 | 1.00 | 0.33 | 0.00 | 0.25 | 0.00 | 1.00 | 0.67 | 0.50 | 0.33 | 0.00 | 0.33 | 0.00 | 0.33 | 0.00 | 0.33 | 0.00 | 0.00 | 1.00 | 0.00 | 0.50 | 1.00 | 0.75 | 0.67 | 0.00 | 1.00 | 0.67 | 0.50 | 0.45 | 5.52 |
| F | 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 | 1.00 | 0.67 | 1.00 | 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 | 0.13 | 1.65 |
| G | 0.00 | 0.25 | 0.50 | 0.75 | 0.00 | 0.33 | 0.33 | 0.25 | 0.00 | 0.25 | 0.67 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.33 | 0.00 | 0.33 | 1.00 | 0.33 | 0.00 | 0.75 | 0.50 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 1.50 | 0.29 | 3.54 |
| H | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.13 |
| I | 1.50 | 3.25 | 3.00 | 2.50 | 4.67 | 3.67 | 2.67 | 2.25 | 2.67 | 1.25 | 3.67 | 2.25 | 2.33 | 1.00 | 1.33 | 2.00 | 1.00 | 1.67 | 1.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 1.67 | 1.00 | 0.33 | 1.00 | 0.00 | 1.33 | 0.00 | 1.59 | 19.54 |
| x | 0.00 | 0.25 | 1.00 | 3.25 | 1.33 | 0.67 | 2.00 | 1.00 | 2.67 | 1.75 | 2.00 | 0.25 | 0.67 | 1.33 | 2.33 | 1.00 | 1.00 | 1.00 | 2.33 | 1.50 | 1.33 | 1.50 | 3.75 | 2.50 | 1.33 | 1.00 | 1.00 | 1.50 | 3.00 | 2.00 | 2.00 | 1.56 | 19.15 |
| r | 0.25 | 0.00 | 0.75 | 0.25 | 0.33 | 1.00 | 1.00 | 0.00 | 0.33 | 0.00 | 0.00 | 1.00 | 0.33 | 0.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.67 | 1.50 | 0.50 | 1.25 | 1.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.33 | 0.50 | 0.41 | 4.99 |
| s | 3.00 | 4.00 | 4.75 | 4.25 | 5.67 | 5.33 | 8.00 | 5.50 | 5.33 | 4.25 | 2.00 | 2.75 | 3.00 | 4.00 | 1.00 | 2.00 | 1.67 | 3.00 | 3.00 | 2.00 | 1.67 | 2.00 | 0.50 | 1.00 | 1.67 | 2.75 | 3.00 | 4.50 | 4.50 | 2.67 | 2.00 | 3.25 | 39.98 |
| a | 2.00 | 2.50 | 0.75 | 1.75 | 3.00 | 4.67 | 1.33 | 3.25 | 2.33 | 2.75 | 5.33 | 4.50 | 3.67 | 2.00 | 2.00 | 1.50 | 2.33 | 1.67 | 1.33 | 2.00 | 2.67 | 2.00 | 4.25 | 4.50 | 4.00 | 2.50 | 3.33 | 1.50 | 1.50 | 3.00 | 2.50 | 2.66 | 32.71 |
| h | 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 | 0.00 | 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 | 0.10 |
| k | 1.00 | 1.00 | 0.75 | 1.00 | 0.67 | 0.67 | 0.33 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.33 | 1.00 | 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 | 3.08 |
| x | 1.50 | 3.50 | 4.00 | 5.00 | 6.00 | 4.00 | 3.33 | 2.75 | 5.33 | 3.00 | 5.00 | 2.50 | 3.00 | 2.33 | 3.33 | 3.00 | 2.00 | 2.33 | 1.67 | 0.50 | 0.33 | 0.50 | 1.00 | 1.00 | 2.33 | 1.75 | 0.67 | 2.00 | 2.50 | 2.67 | 0.50 | 2.56 | 31.48 |
| o | 3.75 | 3.25 | 3.75 | 5.25 | 4.00 | 7.67 | 9.33 | 6.50 | 4.67 | 4.50 | 3.67 | 5.00 | 3.67 | 4.33 | 1.67 | 1.50 | 2.33 | 3.33 | 5.00 | 5.00 | 6.00 | 5.50 | 8.00 | 6.50 | 4.67 | 3.75 | 5.00 | 5.00 | 5.50 | 4.33 | 6.00 | 4.79 | 58.90 |
| i | 0.75 | 0.75 | 0.50 | 0.25 | 1.00 | 0.67 | 0.00 | 0.50 | 1.00 | 1.00 | 0.67 | 1.00 | 1.00 | 0.00 | 0.67 | 0.50 | 0.67 | 0.00 | 0.33 | 0.00 | 0.00 | 1.00 | 0.00 | 1.25 | 1.33 | 1.00 | 1.67 | 0.50 | 0.50 | 1.00 | 0.50 | 0.65 | 7.94 |
| c | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.33 | 1.00 | 0.67 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.14 | 1.69 |
| CV | 127.25 | 132.00 | 122.25 | 111.00 | 154.33 | 173.00 | 167.67 | 135.25 | 126.00 | 124.50 | 104.67 | 111.75 | 113.00 | 111.67 | 76.33 | 96.50 | 76.67 | 66.33 | 74.00 | 66.50 | 74.00 | 114.00 | 80.25 | 112.75 | 88.00 | 85.00 | 131.33 | 101.50 | 132.00 | 88.33 | 87.50 | 108.56 | 100 |
| CVn | 42.25 | 43.25 | 41.50 | 44.25 | 93.33 | 87.00 | 104.33 | 100.25 | 100.00 | 108.00 | 96.33 | 103.00 | 111.33 | 111.33 | 76.33 | 96.00 | 75.67 | 49.00 | 39.33 | 13.50 | 14.67 | 25.00 | 22.75 | 30.75 | 21.33 | 14.00 | 46.33 | 52.00 | 47.00 | 53.67 | 59.50 | 62.03 | 57.14 |
| CVs | 85.00 | 88.75 | 80.75 | 66.75 | 61.00 | 86.00 | 63.33 | 35.00 | 26.00 | 16.50 | 8.33 | 8.75 | 1.67 | 0.33 | 0.00 | 0.50 | 1.00 | 17.33 | 34.67 | 53.00 | 59.33 | 89.00 | 57.50 | 82.00 | 66.67 | 71.00 | 85.00 | 49.50 | 85.00 | 34.67 | 28.00 | 46.53 | 42.86 |
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