Statistics of sunspot activity
October, 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 | 34.50 | 43.33 | 32.50 | 21.67 | 36.67 | 81.67 | 96.33 | 125.67 | 120.33 | 86.33 | 71.67 | 52.33 | 65.75 | 79.50 | 108.25 | 108.67 | 108.25 | 108.00 | 116.67 | 98.00 | 92.50 | 58.50 | 55.00 | 49.50 | 57.75 | 30.67 | 17.00 | 41.00 | 70.00 | 74.25 | 69.25 | 71.34 | 100 |
| Wn | 16.50 | 16.00 | 13.00 | 21.67 | 25.67 | 42.67 | 46.33 | 78.33 | 73.33 | 45.00 | 35.67 | 17.00 | 40.25 | 40.25 | 71.50 | 76.67 | 89.75 | 86.75 | 83.67 | 74.00 | 63.50 | 34.50 | 22.00 | 21.75 | 25.75 | 23.00 | 17.00 | 23.00 | 35.00 | 44.75 | 40.25 | 43.37 | 60.80 |
| Ws | 18.00 | 27.33 | 19.50 | 0.00 | 11.00 | 39.00 | 50.00 | 47.33 | 47.00 | 41.33 | 36.00 | 35.33 | 25.50 | 39.25 | 36.75 | 32.00 | 18.50 | 21.25 | 33.00 | 24.00 | 29.00 | 24.00 | 33.00 | 27.75 | 32.00 | 7.67 | 0.00 | 18.00 | 35.00 | 29.50 | 29.00 | 27.97 | 39.20 |
| n | 3.00 | 3.33 | 2.50 | 1.00 | 2.00 | 5.00 | 5.33 | 6.67 | 6.67 | 4.33 | 4.33 | 3.33 | 3.75 | 4.50 | 6.75 | 6.00 | 6.25 | 6.75 | 7.33 | 6.50 | 5.50 | 3.00 | 3.00 | 3.75 | 4.25 | 2.33 | 1.00 | 2.67 | 5.50 | 5.50 | 5.00 | 4.41 | 100 |
| A | 1.50 | 0.33 | 0.50 | 0.00 | 1.00 | 1.33 | 0.33 | 1.67 | 2.00 | 1.33 | 1.33 | 1.00 | 0.00 | 0.50 | 0.50 | 1.33 | 0.75 | 1.00 | 0.00 | 0.50 | 0.00 | 0.50 | 0.33 | 1.00 | 1.50 | 1.00 | 0.00 | 0.33 | 1.00 | 0.75 | 0.50 | 0.77 | 17.42 |
| B | 0.00 | 1.33 | 1.00 | 0.00 | 0.00 | 2.00 | 1.67 | 1.33 | 1.67 | 0.33 | 1.00 | 0.33 | 1.00 | 1.25 | 2.50 | 0.67 | 1.00 | 0.75 | 1.67 | 2.50 | 2.50 | 0.00 | 0.00 | 0.50 | 1.00 | 0.00 | 0.00 | 1.00 | 1.00 | 1.25 | 2.00 | 1.01 | 22.84 |
| C | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 1.00 | 1.67 | 0.67 | 1.67 | 0.33 | 0.33 | 0.75 | 0.25 | 1.00 | 1.00 | 1.75 | 1.25 | 0.67 | 2.00 | 1.50 | 0.00 | 1.67 | 1.25 | 0.25 | 0.00 | 0.33 | 0.33 | 1.50 | 1.50 | 2.00 | 0.82 | 18.51 |
| D | 0.50 | 1.33 | 1.00 | 0.67 | 1.00 | 0.00 | 1.00 | 1.00 | 1.33 | 1.00 | 1.00 | 1.00 | 1.00 | 2.50 | 1.75 | 2.00 | 2.25 | 2.75 | 3.67 | 1.00 | 1.00 | 1.50 | 0.00 | 0.25 | 1.00 | 1.00 | 0.67 | 0.00 | 0.00 | 0.50 | 0.00 | 1.09 | 24.60 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.50 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 1.52 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 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 |
| G | 0.00 | 0.33 | 0.00 | 0.33 | 0.00 | 1.00 | 1.00 | 0.67 | 0.67 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.25 | 0.67 | 0.00 | 0.00 | 0.50 | 0.67 | 0.75 | 0.00 | 0.00 | 0.00 | 0.67 | 0.25 | 0.00 | 0.00 | 0.27 | 6.09 |
| 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 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.03 | 0.79 |
| I | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.67 | 1.00 | 0.00 | 1.00 | 0.67 | 0.25 | 0.50 | 0.67 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.50 | 0.33 | 0.00 | 0.00 | 1.50 | 1.50 | 0.50 | 0.36 | 8.22 |
| x | 1.50 | 1.67 | 1.50 | 0.00 | 1.00 | 3.33 | 2.00 | 3.00 | 3.67 | 1.67 | 2.33 | 1.33 | 1.00 | 1.75 | 3.00 | 2.00 | 1.75 | 1.75 | 1.67 | 3.00 | 2.50 | 0.50 | 0.33 | 1.50 | 2.50 | 1.00 | 0.00 | 1.33 | 2.00 | 2.00 | 2.50 | 1.78 | 40.26 |
| r | 0.00 | 0.67 | 0.00 | 0.00 | 0.00 | 0.33 | 0.67 | 1.33 | 0.00 | 0.33 | 0.00 | 0.00 | 0.25 | 0.00 | 0.75 | 0.00 | 0.50 | 0.25 | 0.67 | 0.50 | 0.50 | 0.50 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.30 | 6.76 |
| s | 1.50 | 0.67 | 0.00 | 0.67 | 0.67 | 0.33 | 0.33 | 1.00 | 1.33 | 1.00 | 1.00 | 1.67 | 0.75 | 1.50 | 2.75 | 3.33 | 1.75 | 2.25 | 2.00 | 1.50 | 2.00 | 1.00 | 0.33 | 1.50 | 0.75 | 0.67 | 0.67 | 0.67 | 2.00 | 1.75 | 1.00 | 1.24 | 28.01 |
| a | 0.00 | 0.33 | 1.00 | 0.00 | 0.33 | 1.00 | 1.33 | 1.33 | 1.67 | 1.33 | 1.00 | 0.33 | 1.75 | 1.25 | 0.25 | 0.67 | 1.50 | 2.00 | 2.00 | 1.00 | 0.50 | 0.50 | 0.33 | 0.50 | 0.75 | 0.67 | 0.33 | 0.33 | 0.75 | 0.50 | 0.25 | 0.82 | 18.64 |
| h | 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 | 0.25 | 0.67 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.25 | 0.75 | 0.25 | 0.10 | 2.31 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.25 | 0.33 | 0.50 | 0.00 | 0.50 | 0.67 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.75 | 0.18 | 4.02 |
| x | 2.50 | 0.33 | 0.50 | 0.00 | 1.00 | 1.33 | 0.33 | 1.67 | 2.00 | 1.33 | 2.00 | 1.67 | 1.00 | 0.50 | 1.50 | 2.00 | 1.00 | 1.50 | 0.67 | 1.00 | 0.50 | 0.50 | 0.33 | 1.00 | 2.00 | 1.33 | 0.00 | 0.67 | 2.75 | 2.25 | 1.00 | 1.17 | 26.43 |
| o | 0.50 | 3.00 | 2.00 | 1.00 | 1.00 | 3.67 | 4.67 | 4.33 | 3.33 | 2.33 | 2.00 | 1.33 | 2.25 | 3.75 | 4.25 | 3.67 | 5.00 | 4.00 | 5.67 | 5.50 | 4.00 | 1.50 | 2.33 | 2.75 | 2.00 | 1.00 | 1.00 | 2.00 | 2.75 | 3.00 | 4.00 | 2.89 | 65.47 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.67 | 0.33 | 0.33 | 0.33 | 0.33 | 0.25 | 0.00 | 0.75 | 0.00 | 0.00 | 0.25 | 0.67 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.19 | 4.20 |
| c | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.25 | 0.25 | 0.25 | 0.33 | 0.25 | 1.00 | 0.33 | 0.00 | 0.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 3.90 |
| CV | 24.00 | 35.00 | 21.50 | 33.33 | 24.00 | 30.67 | 81.33 | 59.00 | 75.33 | 42.33 | 35.67 | 37.00 | 40.00 | 63.75 | 68.75 | 78.00 | 92.50 | 109.75 | 137.33 | 60.50 | 44.50 | 74.50 | 61.67 | 37.25 | 37.75 | 25.33 | 18.33 | 35.33 | 54.00 | 71.50 | 57.00 | 53.77 | 100 |
| CVn | 10.50 | 23.67 | 19.00 | 33.33 | 23.00 | 24.67 | 31.67 | 32.33 | 48.00 | 15.00 | 10.67 | 10.00 | 15.75 | 27.50 | 38.75 | 51.67 | 55.25 | 76.50 | 81.33 | 34.50 | 27.50 | 36.50 | 8.33 | 5.50 | 28.25 | 21.67 | 18.33 | 33.00 | 39.75 | 53.00 | 50.75 | 31.80 | 59.13 |
| CVs | 13.50 | 11.33 | 2.50 | 0.00 | 1.00 | 6.00 | 49.67 | 26.67 | 27.33 | 27.33 | 25.00 | 27.00 | 24.25 | 36.25 | 30.00 | 26.33 | 37.25 | 33.25 | 56.00 | 26.00 | 17.00 | 38.00 | 53.33 | 31.75 | 9.50 | 3.67 | 0.00 | 2.33 | 14.25 | 18.50 | 6.25 | 21.98 | 40.87 |
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