Statistics of sunspot activity
January, 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 | 67.25 | 68.00 | 76.75 | 98.33 | 96.00 | 135.50 | 120.67 | 109.25 | 114.25 | 75.00 | 133.50 | 194.00 | 207.50 | 226.33 | 269.00 | 250.33 | 212.50 | 167.33 | 159.00 | 117.25 | 131.33 | 115.00 | 107.25 | 107.00 | 128.67 | 120.67 | 104.50 | 84.50 | 77.67 | 73.00 | 78.33 | 129.86 | 100 |
| Wn | 51.00 | 50.50 | 53.75 | 73.33 | 71.00 | 94.75 | 91.33 | 77.25 | 57.00 | 27.50 | 45.75 | 55.00 | 53.75 | 71.67 | 78.50 | 73.33 | 51.50 | 55.00 | 53.50 | 51.50 | 68.33 | 62.67 | 65.75 | 58.25 | 62.00 | 48.00 | 35.00 | 28.50 | 13.00 | 14.50 | 31.33 | 55.62 | 42.83 |
| Ws | 16.25 | 17.50 | 23.00 | 25.00 | 25.00 | 40.75 | 29.33 | 32.00 | 57.25 | 47.50 | 87.75 | 139.00 | 153.75 | 154.67 | 190.50 | 177.00 | 161.00 | 112.33 | 105.50 | 65.75 | 63.00 | 52.33 | 41.50 | 48.75 | 66.67 | 72.67 | 69.50 | 56.00 | 64.67 | 58.50 | 47.00 | 74.24 | 57.17 |
| n | 4.00 | 4.00 | 4.25 | 6.00 | 6.75 | 9.50 | 8.33 | 8.00 | 8.75 | 5.00 | 8.00 | 10.25 | 10.75 | 12.00 | 11.50 | 12.67 | 10.50 | 9.67 | 9.50 | 6.75 | 8.00 | 8.00 | 8.00 | 7.25 | 8.00 | 8.33 | 6.75 | 5.25 | 6.00 | 5.50 | 5.67 | 7.84 | 100 |
| A | 0.00 | 0.00 | 0.25 | 0.00 | 0.75 | 0.50 | 0.33 | 0.75 | 2.00 | 0.75 | 1.00 | 0.50 | 0.50 | 1.67 | 0.50 | 1.67 | 0.00 | 0.67 | 1.25 | 0.00 | 0.67 | 0.33 | 0.50 | 0.25 | 1.33 | 3.67 | 1.75 | 0.50 | 0.67 | 0.25 | 0.33 | 0.75 | 9.61 |
| B | 0.25 | 0.00 | 0.25 | 1.33 | 1.50 | 2.75 | 1.67 | 1.00 | 0.50 | 0.50 | 1.00 | 2.50 | 1.50 | 1.00 | 1.50 | 2.67 | 2.50 | 1.00 | 1.75 | 1.00 | 0.67 | 0.67 | 0.75 | 1.00 | 1.00 | 1.00 | 0.75 | 0.75 | 0.67 | 1.50 | 1.00 | 1.16 | 14.79 |
| C | 0.50 | 1.50 | 1.25 | 1.67 | 1.00 | 1.75 | 2.33 | 1.50 | 3.00 | 1.00 | 1.25 | 2.50 | 3.50 | 4.67 | 4.00 | 2.33 | 2.50 | 2.67 | 1.75 | 2.00 | 2.33 | 1.67 | 2.00 | 1.75 | 2.00 | 2.00 | 2.25 | 2.00 | 2.67 | 1.75 | 1.00 | 2.07 | 26.38 |
| D | 1.25 | 1.00 | 1.25 | 1.00 | 2.25 | 1.75 | 1.33 | 2.00 | 1.50 | 1.25 | 2.75 | 2.50 | 2.00 | 1.00 | 2.00 | 2.67 | 2.50 | 2.67 | 2.50 | 2.00 | 2.00 | 2.33 | 1.50 | 2.00 | 2.00 | 1.33 | 1.25 | 0.75 | 1.33 | 1.25 | 2.67 | 1.79 | 22.88 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.50 | 0.25 | 0.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.22 | 2.78 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.75 | 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 | 0.05 | 0.69 |
| G | 1.00 | 1.00 | 1.00 | 1.00 | 0.75 | 0.75 | 0.00 | 0.00 | 0.50 | 1.25 | 1.00 | 1.00 | 0.75 | 0.67 | 1.00 | 0.33 | 0.50 | 0.33 | 1.00 | 1.00 | 1.67 | 1.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.59 | 7.51 |
| H | 0.50 | 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 | 0.02 | 0.21 |
| I | 0.50 | 0.50 | 0.25 | 1.00 | 0.50 | 2.00 | 2.67 | 2.75 | 1.25 | 0.25 | 0.25 | 0.50 | 1.50 | 2.33 | 1.50 | 2.00 | 1.50 | 1.33 | 1.00 | 0.75 | 0.67 | 2.00 | 3.25 | 2.00 | 1.67 | 0.33 | 0.50 | 0.00 | 0.67 | 0.75 | 0.67 | 1.19 | 15.16 |
| x | 0.25 | 0.00 | 0.50 | 1.33 | 2.25 | 3.25 | 2.00 | 1.75 | 2.50 | 1.25 | 2.00 | 3.00 | 2.00 | 2.67 | 2.00 | 4.33 | 2.50 | 1.67 | 3.00 | 1.00 | 1.33 | 1.00 | 1.25 | 1.25 | 2.33 | 4.67 | 2.50 | 1.25 | 1.33 | 1.75 | 1.33 | 1.91 | 24.39 |
| r | 0.50 | 0.00 | 0.00 | 1.00 | 0.50 | 0.50 | 0.00 | 0.75 | 0.75 | 0.25 | 0.75 | 1.25 | 0.25 | 0.33 | 0.50 | 0.67 | 1.00 | 0.00 | 0.50 | 0.50 | 0.33 | 0.33 | 0.75 | 0.50 | 1.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.75 | 0.67 | 0.47 | 6.04 |
| s | 2.00 | 1.25 | 1.00 | 2.33 | 3.00 | 4.25 | 3.00 | 2.75 | 2.75 | 1.25 | 2.50 | 1.75 | 5.25 | 6.33 | 4.50 | 4.00 | 3.50 | 4.00 | 3.50 | 2.50 | 2.67 | 3.00 | 4.50 | 4.25 | 3.67 | 1.33 | 1.25 | 1.50 | 2.33 | 2.00 | 1.33 | 2.88 | 36.74 |
| a | 0.75 | 2.75 | 2.50 | 1.33 | 1.00 | 1.50 | 3.33 | 2.75 | 2.75 | 2.25 | 2.75 | 3.75 | 2.25 | 2.00 | 4.00 | 3.67 | 3.50 | 4.00 | 2.50 | 2.50 | 2.67 | 2.67 | 1.50 | 1.25 | 1.00 | 2.00 | 3.00 | 2.00 | 2.00 | 1.00 | 2.33 | 2.36 | 30.15 |
| h | 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 | 0.00 | 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 | 0.02 | 0.31 |
| k | 0.25 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.00 | 0.67 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.19 | 2.37 |
| x | 1.00 | 0.50 | 0.50 | 1.00 | 1.25 | 2.50 | 3.00 | 3.50 | 3.25 | 1.00 | 1.25 | 1.00 | 2.00 | 4.00 | 2.00 | 3.67 | 1.50 | 2.00 | 2.25 | 0.75 | 1.33 | 2.33 | 3.75 | 2.25 | 3.00 | 4.00 | 2.25 | 0.50 | 1.33 | 1.00 | 1.00 | 1.96 | 24.97 |
| o | 3.00 | 3.50 | 3.50 | 5.00 | 5.50 | 7.00 | 5.00 | 4.50 | 5.50 | 4.00 | 6.00 | 7.50 | 7.75 | 7.00 | 8.00 | 7.67 | 7.50 | 6.33 | 7.00 | 6.00 | 6.67 | 5.67 | 4.25 | 5.00 | 4.67 | 3.67 | 3.75 | 3.75 | 4.67 | 4.50 | 4.67 | 5.44 | 69.37 |
| i | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.75 | 1.25 | 0.50 | 0.67 | 1.00 | 0.33 | 0.50 | 1.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.67 | 0.75 | 1.00 | 0.00 | 0.00 | 0.00 | 0.32 | 4.08 |
| c | 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 | 0.50 | 1.00 | 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 | 0.12 | 1.58 |
| CV | 80.00 | 60.25 | 70.25 | 70.67 | 86.50 | 99.25 | 77.33 | 78.75 | 81.75 | 65.50 | 115.00 | 138.50 | 169.00 | 147.67 | 163.00 | 142.00 | 137.00 | 129.67 | 111.75 | 95.50 | 130.67 | 128.33 | 83.50 | 89.00 | 81.00 | 63.33 | 59.50 | 80.50 | 63.33 | 51.50 | 68.67 | 97.38 | 100 |
| CVn | 61.50 | 43.25 | 49.75 | 47.00 | 61.75 | 68.50 | 56.33 | 60.25 | 38.75 | 19.75 | 43.00 | 62.25 | 54.00 | 52.33 | 56.00 | 47.00 | 47.50 | 45.33 | 44.25 | 42.00 | 62.33 | 43.33 | 49.50 | 44.25 | 35.00 | 34.33 | 24.25 | 29.75 | 19.33 | 2.75 | 27.67 | 44.29 | 45.48 |
| CVs | 18.50 | 17.00 | 20.50 | 23.67 | 24.75 | 30.75 | 21.00 | 18.50 | 43.00 | 45.75 | 72.00 | 76.25 | 115.00 | 95.33 | 107.00 | 95.00 | 89.50 | 84.33 | 67.50 | 53.50 | 68.33 | 85.00 | 34.00 | 44.75 | 46.00 | 29.00 | 35.25 | 50.75 | 44.00 | 48.75 | 41.00 | 53.09 | 54.52 |
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