Statistics of sunspot activity
February, 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 | Average | % |
| W | 94.00 | 105.50 | 130.00 | 121.00 | 113.50 | 155.75 | 147.75 | 156.75 | 167.33 | 165.00 | 157.00 | 140.33 | 141.33 | 162.00 | 173.25 | 177.50 | 156.25 | 132.75 | 127.67 | 105.50 | 128.00 | 136.75 | 132.67 | 166.33 | 184.50 | 185.75 | 193.75 | 183.75 | 159.80 | 148.33 | 100 |
| Wn | 43.00 | 46.75 | 58.00 | 64.33 | 63.50 | 81.00 | 75.75 | 79.50 | 72.33 | 75.50 | 54.00 | 34.67 | 24.67 | 34.00 | 37.75 | 26.25 | 16.50 | 22.25 | 22.00 | 24.75 | 44.50 | 60.75 | 74.67 | 93.00 | 104.50 | 101.25 | 95.50 | 87.75 | 87.80 | 58.84 | 39.67 |
| Ws | 51.00 | 58.75 | 72.00 | 56.67 | 50.00 | 74.75 | 72.00 | 77.25 | 95.00 | 89.50 | 103.00 | 105.67 | 116.67 | 128.00 | 135.50 | 151.25 | 139.75 | 110.50 | 105.67 | 80.75 | 83.50 | 76.00 | 58.00 | 73.33 | 80.00 | 84.50 | 98.25 | 96.00 | 72.00 | 89.49 | 60.33 |
| n | 6.00 | 7.50 | 8.67 | 8.00 | 6.75 | 8.75 | 8.50 | 10.25 | 10.33 | 11.50 | 11.00 | 9.67 | 9.67 | 11.50 | 13.25 | 12.75 | 10.50 | 8.75 | 7.33 | 5.50 | 7.25 | 9.25 | 7.67 | 10.00 | 10.75 | 10.50 | 10.75 | 10.75 | 9.60 | 9.40 | 100 |
| A | 0.67 | 1.25 | 0.67 | 0.67 | 0.50 | 0.75 | 0.25 | 2.50 | 0.67 | 2.00 | 2.00 | 0.67 | 0.00 | 0.50 | 1.00 | 1.00 | 0.75 | 0.75 | 1.33 | 0.50 | 0.50 | 1.50 | 0.00 | 0.67 | 1.25 | 1.25 | 0.50 | 1.75 | 1.00 | 0.93 | 9.84 |
| B | 0.33 | 1.25 | 2.33 | 1.67 | 1.00 | 1.25 | 1.00 | 0.75 | 4.00 | 2.00 | 1.50 | 0.67 | 1.67 | 2.00 | 2.25 | 2.75 | 1.75 | 1.75 | 1.67 | 0.75 | 1.25 | 1.50 | 1.33 | 1.33 | 0.50 | 0.50 | 1.00 | 0.00 | 0.60 | 1.39 | 14.80 |
| C | 1.33 | 1.50 | 2.00 | 1.00 | 0.75 | 1.75 | 1.25 | 2.00 | 1.67 | 2.00 | 1.50 | 3.00 | 2.67 | 2.75 | 2.00 | 2.25 | 1.75 | 0.75 | 0.67 | 0.50 | 1.50 | 1.50 | 2.00 | 2.00 | 2.00 | 3.00 | 3.50 | 3.25 | 2.20 | 1.86 | 19.82 |
| D | 2.33 | 1.25 | 1.00 | 2.00 | 1.25 | 1.75 | 3.50 | 2.75 | 2.00 | 3.00 | 2.00 | 2.67 | 2.33 | 2.25 | 3.00 | 3.75 | 3.00 | 0.50 | 0.00 | 0.50 | 1.25 | 2.00 | 2.67 | 4.00 | 3.75 | 2.00 | 2.75 | 3.00 | 3.00 | 2.25 | 23.93 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.67 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.50 | 1.75 | 1.25 | 1.25 | 1.20 | 0.28 | 2.98 |
| 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 | 0.75 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.25 | 0.20 | 0.10 | 1.08 |
| G | 0.00 | 0.00 | 1.33 | 1.67 | 1.75 | 1.75 | 1.50 | 0.50 | 0.67 | 0.00 | 1.00 | 0.67 | 1.00 | 0.50 | 0.25 | 0.00 | 0.25 | 0.50 | 0.33 | 0.00 | 0.00 | 0.25 | 0.33 | 0.67 | 1.50 | 0.50 | 1.00 | 0.75 | 0.60 | 0.66 | 7.07 |
| 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 | 0.67 | 0.50 | 0.25 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.73 |
| I | 1.33 | 2.25 | 1.33 | 1.00 | 1.00 | 1.25 | 1.00 | 1.75 | 1.33 | 2.50 | 3.00 | 2.00 | 2.00 | 3.50 | 4.75 | 3.00 | 3.00 | 4.25 | 2.00 | 1.75 | 1.50 | 1.75 | 1.00 | 1.33 | 1.25 | 1.00 | 0.75 | 0.50 | 0.80 | 1.86 | 19.76 |
| x | 1.00 | 2.50 | 3.00 | 2.33 | 1.50 | 2.00 | 1.25 | 3.25 | 4.67 | 4.00 | 3.50 | 1.33 | 1.67 | 2.50 | 3.25 | 3.75 | 2.50 | 2.50 | 3.00 | 1.25 | 1.75 | 3.00 | 1.33 | 2.00 | 1.75 | 1.75 | 1.50 | 1.75 | 1.60 | 2.32 | 24.64 |
| r | 1.67 | 0.50 | 1.00 | 0.00 | 0.00 | 0.50 | 0.50 | 1.25 | 0.67 | 0.50 | 0.50 | 0.33 | 0.33 | 1.00 | 1.50 | 1.75 | 1.00 | 0.50 | 0.33 | 0.25 | 0.50 | 1.25 | 0.00 | 0.33 | 0.75 | 1.25 | 1.25 | 0.25 | 0.00 | 0.68 | 7.21 |
| s | 1.67 | 3.00 | 3.33 | 3.67 | 2.75 | 3.25 | 4.00 | 2.75 | 2.67 | 4.50 | 4.50 | 5.67 | 6.00 | 5.50 | 4.75 | 4.25 | 4.25 | 2.75 | 2.00 | 1.00 | 1.75 | 2.25 | 2.33 | 3.33 | 3.00 | 3.25 | 3.75 | 6.25 | 5.20 | 3.56 | 37.91 |
| a | 1.67 | 1.50 | 1.33 | 2.00 | 2.50 | 3.00 | 2.50 | 3.00 | 2.33 | 2.50 | 2.50 | 2.33 | 1.67 | 2.50 | 3.75 | 3.00 | 2.75 | 3.00 | 1.33 | 2.50 | 2.50 | 2.25 | 2.33 | 2.67 | 2.50 | 1.50 | 2.00 | 0.50 | 0.80 | 2.23 | 23.73 |
| 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 | 0.67 | 0.50 | 0.25 | 0.25 | 1.00 | 0.33 | 1.75 | 0.50 | 0.00 | 0.00 | 0.20 | 0.19 | 2.00 |
| k | 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 | 0.50 | 0.25 | 0.67 | 1.33 | 1.00 | 2.25 | 2.25 | 2.00 | 1.80 | 0.42 | 4.51 |
| x | 2.00 | 3.50 | 2.00 | 1.67 | 1.50 | 2.00 | 1.25 | 4.25 | 2.00 | 4.50 | 5.00 | 2.67 | 2.00 | 4.00 | 5.75 | 4.00 | 3.75 | 5.00 | 4.00 | 2.75 | 2.25 | 3.50 | 1.33 | 2.00 | 2.50 | 2.25 | 1.25 | 2.25 | 1.80 | 2.85 | 30.33 |
| o | 4.00 | 4.00 | 6.67 | 6.33 | 4.75 | 6.50 | 6.75 | 5.75 | 8.00 | 7.00 | 6.00 | 7.00 | 7.67 | 7.50 | 7.50 | 8.50 | 6.50 | 3.50 | 2.67 | 1.75 | 4.00 | 4.75 | 6.00 | 7.33 | 7.25 | 5.75 | 7.75 | 6.25 | 6.00 | 5.98 | 63.60 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.50 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.67 | 0.75 | 0.75 | 0.50 | 0.33 | 0.67 | 0.75 | 1.50 | 1.00 | 1.25 | 1.20 | 0.41 | 4.38 |
| c | 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 | 0.25 | 0.25 | 0.50 | 0.00 | 0.00 | 0.25 | 1.00 | 0.75 | 1.00 | 0.60 | 0.16 | 1.69 |
| CV | 66.67 | 64.25 | 88.67 | 106.33 | 98.50 | 112.00 | 142.00 | 103.50 | 92.67 | 113.00 | 112.50 | 124.00 | 125.00 | 121.00 | 130.25 | 129.50 | 115.50 | 72.00 | 77.67 | 76.00 | 101.00 | 112.00 | 145.33 | 179.00 | 233.75 | 220.50 | 213.00 | 223.25 | 206.00 | 127.75 | 100 |
| CVn | 25.67 | 25.50 | 37.00 | 50.67 | 47.75 | 50.50 | 74.75 | 46.25 | 35.67 | 46.00 | 35.00 | 30.33 | 22.67 | 16.00 | 25.50 | 24.50 | 14.25 | 18.50 | 40.00 | 33.00 | 35.50 | 34.25 | 81.33 | 98.67 | 127.25 | 114.25 | 101.50 | 107.25 | 110.60 | 52.07 | 40.76 |
| CVs | 41.00 | 38.75 | 51.67 | 55.67 | 50.75 | 61.50 | 67.25 | 57.25 | 57.00 | 67.00 | 77.50 | 93.67 | 102.33 | 105.00 | 104.75 | 105.00 | 101.25 | 53.50 | 37.67 | 43.00 | 65.50 | 77.75 | 64.00 | 80.33 | 106.50 | 106.25 | 111.50 | 116.00 | 95.40 | 75.68 | 59.24 |
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