Statistics of sunspot activity
March, 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 | 82.75 | 102.75 | 45.50 | 46.50 | 45.00 | 41.25 | 46.00 | 55.00 | 49.00 | 65.25 | 84.00 | 81.00 | 108.33 | 115.00 | 89.50 | 87.75 | 81.75 | 89.00 | 76.75 | 82.25 | 91.00 | 97.50 | 63.00 | 76.50 | 74.67 | 70.00 | 65.50 | 76.75 | 77.75 | 57.50 | 66.75 | 73.91 | 100 |
| Wn | 24.25 | 25.25 | 8.75 | 14.75 | 18.50 | 15.50 | 18.75 | 13.75 | 11.00 | 11.00 | 11.00 | 8.80 | 11.00 | 11.00 | 2.75 | 0.00 | 0.00 | 8.67 | 16.25 | 21.00 | 21.00 | 23.25 | 18.00 | 25.50 | 31.00 | 28.50 | 19.25 | 29.25 | 21.25 | 5.50 | 0.00 | 15.31 | 20.71 |
| Ws | 58.50 | 77.50 | 36.75 | 31.75 | 26.50 | 25.75 | 27.25 | 41.25 | 38.00 | 54.25 | 73.00 | 72.20 | 97.33 | 104.00 | 86.75 | 87.75 | 81.75 | 80.33 | 60.50 | 61.25 | 70.00 | 74.25 | 45.00 | 51.00 | 43.67 | 41.50 | 46.25 | 47.50 | 56.50 | 52.00 | 66.75 | 58.61 | 79.29 |
| n | 5.25 | 6.00 | 2.00 | 2.25 | 2.25 | 3.00 | 3.50 | 4.00 | 3.00 | 4.25 | 5.00 | 4.80 | 6.67 | 6.25 | 3.50 | 3.00 | 3.00 | 4.00 | 3.75 | 5.00 | 6.00 | 5.75 | 3.50 | 3.50 | 3.67 | 3.00 | 3.25 | 4.00 | 4.75 | 3.50 | 3.50 | 4.03 | 100 |
| A | 0.75 | 2.50 | 0.75 | 0.25 | 0.25 | 0.50 | 1.25 | 0.75 | 0.00 | 0.00 | 0.25 | 0.60 | 1.67 | 2.50 | 0.50 | 0.00 | 0.00 | 1.00 | 0.00 | 0.75 | 0.67 | 0.25 | 0.25 | 0.50 | 1.33 | 1.00 | 0.50 | 0.00 | 0.25 | 0.50 | 1.25 | 0.67 | 16.63 |
| B | 1.25 | 1.75 | 0.25 | 0.50 | 0.00 | 1.00 | 0.50 | 1.50 | 0.00 | 0.75 | 1.00 | 1.40 | 1.67 | 0.75 | 0.00 | 0.00 | 0.00 | 0.67 | 0.50 | 1.75 | 1.00 | 0.50 | 0.25 | 1.00 | 0.33 | 0.00 | 0.50 | 1.25 | 1.00 | 1.00 | 0.00 | 0.71 | 17.67 |
| C | 2.25 | 0.75 | 0.00 | 0.50 | 0.50 | 0.50 | 0.50 | 0.75 | 1.00 | 0.75 | 1.00 | 0.20 | 1.00 | 0.50 | 0.50 | 1.00 | 0.75 | 0.33 | 0.75 | 1.00 | 1.00 | 1.25 | 0.00 | 0.00 | 0.00 | 0.50 | 1.50 | 1.25 | 1.75 | 0.50 | 0.25 | 0.73 | 18.04 |
| D | 1.00 | 0.75 | 0.00 | 0.00 | 0.50 | 0.25 | 0.50 | 0.25 | 1.00 | 1.00 | 0.25 | 0.20 | 0.00 | 0.50 | 0.00 | 0.00 | 0.25 | 0.00 | 0.50 | 0.00 | 1.00 | 2.25 | 2.00 | 1.00 | 1.00 | 0.50 | 0.00 | 0.50 | 0.75 | 1.00 | 0.25 | 0.55 | 13.77 |
| E | 0.00 | 0.25 | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.20 | 0.67 | 0.25 | 1.25 | 1.00 | 1.00 | 0.67 | 0.25 | 0.25 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.31 | 7.70 |
| 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 | 0.33 | 0.50 | 0.75 | 0.33 | 0.25 | 0.75 | 1.00 | 1.00 | 1.00 | 0.75 | 0.75 | 0.25 | 0.50 | 1.50 | 0.31 | 7.74 |
| G | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.80 | 0.33 | 0.50 | 0.25 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.25 | 0.14 | 3.38 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 1.00 |
| I | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.75 | 1.00 | 1.50 | 1.50 | 1.40 | 1.33 | 1.25 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.50 | 1.33 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.00 | 0.00 | 0.57 | 14.07 |
| x | 2.00 | 4.25 | 1.00 | 0.75 | 0.25 | 1.50 | 1.75 | 2.25 | 0.00 | 0.75 | 1.25 | 2.00 | 3.33 | 3.25 | 0.50 | 0.00 | 0.00 | 1.67 | 0.50 | 2.50 | 1.67 | 0.75 | 0.50 | 1.50 | 1.67 | 1.00 | 1.00 | 1.25 | 1.25 | 1.50 | 1.25 | 1.38 | 34.30 |
| r | 0.25 | 0.00 | 0.00 | 0.50 | 0.75 | 0.25 | 0.25 | 0.00 | 0.00 | 0.50 | 1.25 | 0.80 | 0.33 | 0.00 | 0.00 | 0.25 | 0.75 | 0.33 | 0.75 | 0.00 | 0.33 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 6.25 |
| s | 2.50 | 1.00 | 0.50 | 0.00 | 0.25 | 0.25 | 1.00 | 1.25 | 2.00 | 1.75 | 0.75 | 1.20 | 2.00 | 1.75 | 1.75 | 1.00 | 0.50 | 0.00 | 0.75 | 1.50 | 2.33 | 2.50 | 1.25 | 1.00 | 0.67 | 0.50 | 1.00 | 1.00 | 2.00 | 0.50 | 1.25 | 1.15 | 28.59 |
| a | 0.50 | 0.75 | 0.25 | 0.00 | 0.00 | 0.25 | 0.25 | 0.50 | 1.00 | 1.00 | 1.50 | 0.80 | 1.00 | 1.25 | 0.25 | 0.75 | 0.75 | 1.00 | 1.00 | 0.25 | 1.00 | 1.50 | 0.50 | 0.00 | 0.00 | 0.50 | 0.50 | 0.75 | 0.50 | 0.50 | 0.00 | 0.61 | 15.05 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.75 | 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 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 1.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.75 | 0.14 | 3.54 |
| k | 0.00 | 0.00 | 0.25 | 1.00 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.75 | 0.50 | 0.67 | 0.75 | 1.00 | 1.00 | 0.67 | 0.00 | 0.75 | 1.00 | 1.00 | 0.50 | 0.25 | 0.49 | 12.28 |
| x | 0.75 | 2.50 | 0.75 | 0.25 | 0.25 | 0.75 | 2.00 | 1.50 | 1.00 | 1.75 | 2.00 | 2.00 | 3.00 | 3.75 | 1.50 | 1.00 | 1.00 | 2.00 | 1.00 | 1.25 | 2.00 | 1.00 | 0.50 | 0.50 | 1.33 | 1.00 | 0.50 | 0.25 | 0.75 | 0.50 | 1.25 | 1.28 | 31.70 |
| o | 4.25 | 2.50 | 0.25 | 1.00 | 1.00 | 2.25 | 1.50 | 2.50 | 2.00 | 2.50 | 2.75 | 2.60 | 2.67 | 1.25 | 0.75 | 1.00 | 1.00 | 1.00 | 2.00 | 2.75 | 3.33 | 3.75 | 2.25 | 2.00 | 1.00 | 1.00 | 2.00 | 3.00 | 3.50 | 2.50 | 0.75 | 2.02 | 50.13 |
| i | 0.25 | 1.00 | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.20 | 1.00 | 1.00 | 0.25 | 0.25 | 0.50 | 0.33 | 0.25 | 0.75 | 0.67 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.25 | 0.00 | 1.25 | 0.43 | 10.57 |
| 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 | 1.00 | 0.75 | 0.50 | 0.67 | 0.50 | 0.25 | 0.00 | 0.25 | 0.25 | 1.00 | 1.33 | 1.00 | 0.50 | 0.25 | 0.25 | 0.50 | 0.25 | 0.31 | 7.61 |
| CV | 50.75 | 38.75 | 33.25 | 50.75 | 59.25 | 46.75 | 33.00 | 24.25 | 43.00 | 50.75 | 49.00 | 40.40 | 49.67 | 52.25 | 85.00 | 71.00 | 67.75 | 64.33 | 69.50 | 65.75 | 85.67 | 106.75 | 92.25 | 84.50 | 96.00 | 76.00 | 57.00 | 73.25 | 82.25 | 73.50 | 86.50 | 63.19 | 100 |
| CVn | 10.25 | 5.00 | 1.00 | 3.50 | 10.75 | 5.00 | 6.50 | 12.50 | 7.00 | 7.75 | 4.00 | 2.60 | 4.00 | 3.25 | 0.25 | 0.00 | 0.00 | 2.33 | 11.25 | 4.75 | 9.67 | 13.25 | 23.50 | 25.00 | 37.00 | 16.00 | 10.00 | 11.25 | 8.75 | 0.50 | 0.00 | 8.28 | 13.10 |
| CVs | 40.50 | 33.75 | 32.25 | 47.25 | 48.50 | 41.75 | 26.50 | 11.75 | 36.00 | 43.00 | 45.00 | 37.80 | 45.67 | 49.00 | 84.75 | 71.00 | 67.75 | 62.00 | 58.25 | 61.00 | 76.00 | 93.50 | 68.75 | 59.50 | 59.00 | 60.00 | 47.00 | 62.00 | 73.50 | 73.00 | 86.50 | 54.91 | 86.90 |
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