Statistics of sunspot activity
January, 1999
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 | 94.00 | 93.00 | 100.67 | 83.25 | 76.25 | 65.50 | 98.00 | 70.50 | 70.75 | 61.25 | 42.00 | 38.75 | 63.33 | 91.75 | 110.25 | 92.00 | 138.33 | 168.00 | 171.75 | 157.00 | 132.75 | 133.25 | 111.75 | 98.67 | 57.33 | 35.75 | 41.67 | 40.00 | 33.00 | 29.00 | 51.00 | 85.50 | 100 |
| Wn | 77.67 | 76.67 | 75.67 | 55.25 | 53.75 | 47.00 | 47.75 | 24.75 | 12.50 | 20.00 | 14.67 | 8.25 | 20.33 | 46.00 | 61.25 | 54.80 | 81.33 | 100.00 | 104.50 | 97.00 | 89.50 | 91.75 | 75.50 | 57.00 | 37.33 | 27.25 | 28.67 | 37.00 | 27.50 | 29.00 | 47.00 | 52.47 | 61.37 |
| Ws | 16.33 | 16.33 | 25.00 | 28.00 | 22.50 | 18.50 | 50.25 | 45.75 | 58.25 | 41.25 | 27.33 | 30.50 | 43.00 | 45.75 | 49.00 | 37.20 | 57.00 | 68.00 | 67.25 | 60.00 | 43.25 | 41.50 | 36.25 | 41.67 | 20.00 | 8.50 | 13.00 | 3.00 | 5.50 | 0.00 | 4.00 | 33.03 | 38.63 |
| n | 4.00 | 5.00 | 5.00 | 5.25 | 5.25 | 4.50 | 7.00 | 5.00 | 5.00 | 5.00 | 3.67 | 3.00 | 4.00 | 5.25 | 5.25 | 3.80 | 4.67 | 5.00 | 6.25 | 7.00 | 7.25 | 7.50 | 5.50 | 6.33 | 4.33 | 3.00 | 3.33 | 3.25 | 2.50 | 2.00 | 3.67 | 4.76 | 100 |
| A | 1.00 | 1.33 | 1.00 | 1.00 | 0.00 | 1.25 | 1.50 | 1.50 | 1.00 | 1.00 | 1.00 | 0.25 | 0.00 | 1.00 | 0.75 | 0.20 | 0.67 | 0.33 | 1.00 | 1.67 | 0.75 | 1.50 | 0.75 | 1.67 | 0.67 | 1.25 | 0.67 | 2.25 | 1.50 | 0.00 | 1.00 | 0.95 | 19.96 |
| B | 0.67 | 1.33 | 1.67 | 0.50 | 0.75 | 0.75 | 3.00 | 1.25 | 1.25 | 0.50 | 0.67 | 0.75 | 0.67 | 0.75 | 1.25 | 0.60 | 0.00 | 0.67 | 1.00 | 1.00 | 1.25 | 1.25 | 1.25 | 1.00 | 1.33 | 0.75 | 1.33 | 1.00 | 0.50 | 1.00 | 1.67 | 1.01 | 21.25 |
| C | 1.00 | 0.33 | 1.33 | 0.50 | 0.75 | 1.00 | 1.25 | 0.75 | 0.25 | 1.25 | 0.33 | 0.75 | 1.33 | 0.50 | 0.25 | 0.60 | 0.33 | 0.00 | 0.25 | 0.67 | 1.00 | 1.00 | 0.75 | 0.67 | 1.33 | 0.50 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.62 | 13.11 |
| D | 0.33 | 0.00 | 0.00 | 0.75 | 1.75 | 0.25 | 0.50 | 0.00 | 1.25 | 0.25 | 0.00 | 0.00 | 0.33 | 1.00 | 1.00 | 0.20 | 0.67 | 1.00 | 1.00 | 0.33 | 0.25 | 1.25 | 0.75 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.50 | 1.00 | 0.67 | 0.55 | 11.54 |
| E | 1.00 | 0.67 | 0.00 | 0.25 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 1.00 | 0.75 | 1.00 | 1.00 | 0.67 | 0.75 | 0.67 | 1.25 | 1.25 | 1.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.41 | 8.70 |
| F | 0.00 | 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 | 0.40 | 0.33 | 1.00 | 1.25 | 1.33 | 0.75 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 5.18 |
| G | 0.00 | 0.00 | 0.00 | 0.75 | 0.25 | 0.50 | 0.75 | 1.00 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.67 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 1.00 | 0.00 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.33 | 0.26 | 5.53 |
| 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 | 0.00 | 1.00 | 0.00 | 1.50 | 1.75 | 0.50 | 0.00 | 0.50 | 0.25 | 1.75 | 1.67 | 1.25 | 1.00 | 1.00 | 1.00 | 0.80 | 1.00 | 1.00 | 1.00 | 1.33 | 2.00 | 0.50 | 0.00 | 0.33 | 0.00 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.70 | 14.72 |
| x | 1.67 | 2.67 | 2.67 | 1.50 | 0.75 | 2.00 | 4.50 | 2.75 | 2.25 | 1.50 | 1.67 | 1.00 | 0.67 | 1.75 | 2.00 | 0.80 | 0.67 | 1.00 | 2.00 | 2.67 | 2.00 | 2.75 | 2.00 | 2.67 | 2.00 | 2.00 | 2.00 | 3.25 | 2.00 | 1.00 | 2.67 | 1.96 | 41.21 |
| r | 0.00 | 0.33 | 0.33 | 0.25 | 0.25 | 0.75 | 1.50 | 0.75 | 0.25 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.25 | 0.20 | 0.33 | 0.00 | 0.25 | 0.67 | 0.50 | 0.75 | 0.50 | 0.33 | 0.00 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 6.18 |
| s | 0.33 | 0.67 | 1.00 | 1.75 | 2.25 | 0.75 | 0.25 | 1.25 | 2.50 | 2.25 | 1.67 | 1.50 | 1.67 | 1.50 | 1.00 | 1.20 | 2.00 | 2.00 | 1.75 | 1.33 | 2.00 | 1.25 | 0.50 | 2.00 | 1.00 | 0.50 | 0.67 | 0.00 | 0.00 | 0.67 | 0.67 | 1.22 | 25.66 |
| a | 1.00 | 0.33 | 0.00 | 1.50 | 2.00 | 1.00 | 0.75 | 0.25 | 0.00 | 1.25 | 0.33 | 0.50 | 1.33 | 2.00 | 1.75 | 1.60 | 1.67 | 2.00 | 2.25 | 2.00 | 2.25 | 1.50 | 1.75 | 0.67 | 1.33 | 0.25 | 0.33 | 0.00 | 0.50 | 0.33 | 0.33 | 1.06 | 22.21 |
| 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 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.34 |
| k | 1.00 | 1.00 | 1.00 | 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 | 0.33 | 0.50 | 1.00 | 0.50 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.21 | 4.41 |
| x | 1.00 | 2.33 | 1.00 | 2.50 | 1.75 | 1.75 | 1.50 | 2.00 | 1.25 | 2.75 | 2.67 | 1.50 | 1.00 | 2.00 | 1.75 | 1.00 | 1.67 | 1.33 | 2.00 | 3.00 | 2.75 | 2.00 | 0.75 | 2.00 | 0.67 | 1.50 | 1.00 | 2.25 | 1.50 | 0.00 | 1.00 | 1.65 | 34.68 |
| o | 2.00 | 1.67 | 3.00 | 2.50 | 3.25 | 2.50 | 5.25 | 3.00 | 3.75 | 2.25 | 1.00 | 1.50 | 2.33 | 2.25 | 2.25 | 1.20 | 1.67 | 2.00 | 2.00 | 2.00 | 2.50 | 3.50 | 3.25 | 3.67 | 3.67 | 1.50 | 2.33 | 1.00 | 1.00 | 2.00 | 2.67 | 2.40 | 50.46 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.75 | 0.50 | 0.80 | 1.00 | 1.33 | 1.75 | 2.00 | 1.00 | 1.25 | 0.75 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 8.51 |
| c | 1.00 | 1.00 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.75 | 0.80 | 0.33 | 0.33 | 0.50 | 0.00 | 1.00 | 0.75 | 0.75 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.30 | 6.36 |
| CV | 73.67 | 71.00 | 74.00 | 65.00 | 67.00 | 36.25 | 39.00 | 38.00 | 64.50 | 41.50 | 21.67 | 21.00 | 48.67 | 63.00 | 70.00 | 59.00 | 77.67 | 85.00 | 89.50 | 83.00 | 103.00 | 124.25 | 95.25 | 92.33 | 37.00 | 14.25 | 18.67 | 4.25 | 12.00 | 25.00 | 27.67 | 56.20 | 100 |
| CVn | 64.67 | 61.33 | 62.00 | 48.50 | 49.75 | 29.25 | 27.75 | 27.00 | 26.00 | 20.25 | 12.33 | 7.50 | 16.33 | 32.25 | 41.50 | 34.20 | 55.33 | 59.67 | 59.75 | 49.33 | 63.25 | 83.00 | 51.50 | 47.67 | 32.00 | 13.25 | 14.00 | 3.75 | 11.50 | 25.00 | 27.00 | 37.31 | 66.39 |
| CVs | 9.00 | 9.67 | 12.00 | 16.50 | 17.25 | 7.00 | 11.25 | 11.00 | 38.50 | 21.25 | 9.33 | 13.50 | 32.33 | 30.75 | 28.50 | 24.80 | 22.33 | 25.33 | 29.75 | 33.67 | 39.75 | 41.25 | 43.75 | 44.67 | 5.00 | 1.00 | 4.67 | 0.50 | 0.50 | 0.00 | 0.67 | 18.89 | 33.61 |
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