Statistics of sunspot activity
January, 1998
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 | 53.75 | 46.00 | 31.00 | 42.00 | 11.25 | 22.50 | 11.00 | 0.00 | 0.00 | 14.00 | 42.00 | 54.00 | 49.33 | 42.00 | 48.33 | 77.00 | 81.00 | 63.50 | 58.00 | 33.00 | 24.50 | 28.33 | 54.00 | 93.33 | 90.33 | 93.00 | 100.75 | 89.25 | 62.33 | 37.50 | 37.67 | 48.09 | 100 |
| Wn | 15.50 | 18.67 | 17.00 | 17.00 | 11.25 | 11.50 | 0.00 | 0.00 | 0.00 | 0.00 | 20.00 | 5.50 | 0.00 | 0.00 | 3.67 | 18.67 | 22.67 | 27.00 | 24.67 | 16.00 | 13.00 | 11.00 | 19.25 | 48.33 | 38.00 | 45.25 | 50.75 | 46.75 | 35.67 | 23.75 | 25.00 | 18.90 | 39.30 |
| Ws | 38.25 | 27.33 | 14.00 | 25.00 | 0.00 | 11.00 | 11.00 | 0.00 | 0.00 | 14.00 | 22.00 | 48.50 | 49.33 | 42.00 | 44.67 | 58.33 | 58.33 | 36.50 | 33.33 | 17.00 | 11.50 | 17.33 | 34.75 | 45.00 | 52.33 | 47.75 | 50.00 | 42.50 | 26.67 | 13.75 | 12.67 | 29.19 | 60.70 |
| n | 3.00 | 2.67 | 2.00 | 3.00 | 1.00 | 2.00 | 1.00 | 0.00 | 0.00 | 1.00 | 3.25 | 2.50 | 2.67 | 2.00 | 2.33 | 4.33 | 5.33 | 4.75 | 4.67 | 2.67 | 2.00 | 2.33 | 3.75 | 6.33 | 6.00 | 5.50 | 5.25 | 5.25 | 4.33 | 2.75 | 3.00 | 3.12 | 100 |
| A | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.50 | 1.00 | 0.00 | 0.00 | 0.00 | 1.25 | 0.50 | 0.67 | 0.00 | 0.33 | 1.00 | 1.33 | 0.50 | 2.00 | 1.00 | 0.50 | 1.33 | 1.75 | 2.67 | 1.33 | 1.25 | 0.75 | 1.00 | 1.33 | 0.50 | 1.33 | 0.81 | 25.95 |
| B | 0.00 | 0.00 | 1.00 | 2.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 1.00 | 1.50 | 1.25 | 0.67 | 0.50 | 1.00 | 1.33 | 1.33 | 2.75 | 2.00 | 1.67 | 1.50 | 0.67 | 0.50 | 1.67 | 2.00 | 1.75 | 2.25 | 1.75 | 1.67 | 1.25 | 0.67 | 1.10 | 35.34 |
| C | 1.75 | 0.67 | 0.25 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.25 | 0.00 | 1.00 | 1.33 | 1.25 | 0.33 | 0.00 | 0.00 | 0.33 | 1.25 | 1.00 | 1.33 | 0.50 | 0.50 | 1.00 | 0.00 | 0.50 | 0.00 | 0.45 | 14.48 |
| D | 1.25 | 1.67 | 0.75 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.33 | 0.75 | 0.33 | 0.00 | 0.67 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 1.00 | 0.33 | 1.00 | 0.75 | 0.25 | 0.00 | 0.00 | 0.00 | 0.40 | 12.76 |
| E | 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 | 0.67 | 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 | 0.07 | 2.33 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.75 | 0.75 | 0.75 | 0.33 | 0.00 | 0.00 | 0.09 | 3.02 |
| G | 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 | 0.00 | 0.00 | 0.00 | 0.67 | 0.25 | 0.25 | 0.25 | 0.67 | 0.00 | 0.00 | 0.08 | 2.50 |
| 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 | 0.33 | 0.00 | 0.00 | 0.50 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.50 | 1.00 | 0.11 | 3.62 |
| x | 0.00 | 0.00 | 1.00 | 2.00 | 0.25 | 2.00 | 1.00 | 0.00 | 0.00 | 1.00 | 2.75 | 1.75 | 1.33 | 0.50 | 1.33 | 2.33 | 2.67 | 3.25 | 4.00 | 2.67 | 2.00 | 2.00 | 2.25 | 4.33 | 3.33 | 3.00 | 3.00 | 2.75 | 3.00 | 1.75 | 2.00 | 1.91 | 61.29 |
| r | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.50 | 0.00 | 0.25 | 0.00 | 0.67 | 0.33 | 0.00 | 0.33 | 0.00 | 0.00 | 0.33 | 0.50 | 0.00 | 0.33 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.15 | 4.66 |
| s | 1.50 | 2.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.75 | 0.00 | 0.67 | 1.00 | 0.50 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.33 | 1.75 | 1.25 | 0.50 | 0.67 | 0.75 | 1.00 | 0.52 | 16.81 |
| a | 0.50 | 0.67 | 1.00 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.50 | 1.00 | 0.33 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.67 | 0.67 | 0.50 | 0.75 | 1.25 | 0.33 | 0.25 | 0.00 | 0.43 | 13.71 |
| h | 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 | 0.33 | 0.25 | 0.25 | 0.25 | 0.33 | 0.00 | 0.00 | 0.05 | 1.72 |
| k | 0.75 | 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 | 0.33 | 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 | 0.06 | 1.81 |
| x | 0.00 | 0.33 | 0.00 | 0.00 | 0.75 | 1.50 | 1.00 | 0.00 | 0.00 | 0.00 | 1.25 | 0.50 | 0.67 | 0.25 | 0.33 | 1.00 | 1.33 | 0.50 | 2.33 | 1.00 | 0.50 | 1.33 | 1.75 | 2.67 | 1.33 | 1.25 | 0.75 | 1.25 | 1.67 | 1.00 | 2.33 | 0.92 | 29.57 |
| o | 3.00 | 2.33 | 1.75 | 3.00 | 0.25 | 0.50 | 0.00 | 0.00 | 0.00 | 1.00 | 2.00 | 1.25 | 1.00 | 0.75 | 1.00 | 2.33 | 3.67 | 4.25 | 2.33 | 1.67 | 1.50 | 1.00 | 2.00 | 3.00 | 4.33 | 3.50 | 3.75 | 3.25 | 2.33 | 1.75 | 0.67 | 1.91 | 61.21 |
| i | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.00 | 0.75 | 0.33 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.33 | 0.75 | 0.75 | 0.75 | 0.33 | 0.00 | 0.00 | 0.26 | 8.28 |
| 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 | 0.25 | 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 | 0.03 | 0.95 |
| CV | 76.75 | 49.33 | 18.50 | 23.00 | 5.75 | 2.50 | 1.00 | 0.00 | 0.00 | 2.00 | 6.75 | 16.50 | 36.33 | 32.25 | 31.00 | 43.67 | 53.67 | 22.25 | 11.00 | 4.33 | 3.50 | 4.33 | 15.25 | 51.00 | 59.67 | 67.50 | 60.25 | 50.50 | 43.00 | 12.75 | 12.67 | 26.35 | 100 |
| CVn | 38.75 | 17.33 | 16.50 | 19.00 | 5.75 | 1.50 | 0.00 | 0.00 | 0.00 | 0.00 | 2.25 | 0.50 | 0.00 | 0.00 | 0.33 | 7.00 | 8.67 | 6.25 | 3.67 | 2.00 | 2.00 | 2.33 | 1.75 | 5.33 | 8.33 | 10.00 | 8.00 | 6.50 | 4.33 | 3.00 | 2.67 | 5.93 | 22.49 |
| CVs | 38.00 | 32.00 | 2.00 | 4.00 | 0.00 | 1.00 | 1.00 | 0.00 | 0.00 | 2.00 | 4.50 | 16.00 | 36.33 | 32.25 | 30.67 | 36.67 | 45.00 | 16.00 | 7.33 | 2.33 | 1.50 | 2.00 | 13.50 | 45.67 | 51.33 | 57.50 | 52.25 | 44.00 | 38.67 | 9.75 | 10.00 | 20.43 | 77.51 |
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