Statistics of sunspot activity
February, 1993
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 | Average | % |
| W | 32.40 | 57.00 | 101.20 | 122.60 | 164.50 | 176.80 | 180.20 | 172.60 | 195.50 | 141.40 | 117.20 | 127.20 | 114.75 | 113.00 | 105.67 | 121.67 | 86.40 | 100.20 | 109.00 | 125.67 | 118.60 | 127.67 | 136.00 | 122.00 | 92.00 | 108.20 | 121.00 | 139.20 | 122.49 | 100 |
| Wn | 2.20 | 20.00 | 64.20 | 81.80 | 104.00 | 118.80 | 117.20 | 113.80 | 117.75 | 75.60 | 58.00 | 74.00 | 56.25 | 58.40 | 41.33 | 57.00 | 47.80 | 43.00 | 43.40 | 53.33 | 50.00 | 51.00 | 58.00 | 48.00 | 46.00 | 53.60 | 70.25 | 80.00 | 64.45 | 52.62 |
| Ws | 30.20 | 37.00 | 37.00 | 40.80 | 60.50 | 58.00 | 63.00 | 58.80 | 77.75 | 65.80 | 59.20 | 53.20 | 58.50 | 54.60 | 64.33 | 64.67 | 38.60 | 57.20 | 65.60 | 72.33 | 68.60 | 76.67 | 78.00 | 74.00 | 46.00 | 54.60 | 50.75 | 59.20 | 58.03 | 47.38 |
| n | 2.20 | 3.33 | 5.60 | 6.20 | 7.00 | 7.00 | 7.20 | 7.20 | 8.75 | 6.60 | 5.00 | 5.60 | 4.75 | 5.40 | 5.67 | 7.67 | 5.40 | 6.20 | 6.40 | 8.67 | 7.80 | 7.67 | 7.67 | 6.00 | 5.60 | 6.40 | 7.25 | 9.00 | 6.40 | 100 |
| A | 0.40 | 0.33 | 0.60 | 0.40 | 0.25 | 0.40 | 0.80 | 0.60 | 1.00 | 1.40 | 0.60 | 0.20 | 0.25 | 0.60 | 1.00 | 2.00 | 1.00 | 0.80 | 0.00 | 2.00 | 0.60 | 0.33 | 0.00 | 0.00 | 0.40 | 0.00 | 0.25 | 2.20 | 0.66 | 10.28 |
| B | 0.00 | 0.67 | 1.60 | 0.20 | 0.00 | 0.40 | 0.00 | 0.40 | 1.50 | 1.40 | 1.60 | 1.60 | 0.50 | 0.40 | 0.33 | 0.33 | 0.20 | 0.80 | 0.40 | 0.67 | 0.40 | 0.67 | 0.67 | 0.67 | 0.60 | 1.00 | 1.00 | 0.80 | 0.67 | 10.49 |
| C | 1.00 | 1.33 | 2.40 | 2.20 | 1.75 | 2.20 | 1.80 | 1.80 | 3.00 | 2.00 | 0.80 | 1.20 | 0.50 | 0.40 | 1.67 | 1.33 | 2.40 | 2.00 | 2.60 | 3.33 | 2.40 | 2.00 | 1.33 | 1.00 | 1.40 | 1.40 | 1.00 | 0.00 | 1.65 | 25.81 |
| D | 0.20 | 0.33 | 0.00 | 1.00 | 1.75 | 1.40 | 1.80 | 2.00 | 1.00 | 0.20 | 0.40 | 0.60 | 1.50 | 1.40 | 0.67 | 1.33 | 1.20 | 2.00 | 2.60 | 1.33 | 2.40 | 1.33 | 1.67 | 1.00 | 0.20 | 0.80 | 1.00 | 1.00 | 1.15 | 17.92 |
| E | 0.00 | 0.00 | 0.40 | 0.60 | 1.25 | 1.40 | 1.00 | 2.00 | 1.25 | 0.80 | 1.00 | 0.80 | 0.75 | 0.60 | 0.33 | 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 | 0.45 | 6.98 |
| F | 0.00 | 0.00 | 0.20 | 0.20 | 0.00 | 0.00 | 0.40 | 0.00 | 0.25 | 0.20 | 0.00 | 0.00 | 0.25 | 0.40 | 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 | 1.06 |
| G | 0.00 | 0.33 | 0.40 | 0.20 | 0.50 | 0.80 | 1.00 | 0.00 | 0.50 | 0.40 | 0.20 | 0.20 | 0.00 | 0.20 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.33 | 0.60 | 1.00 | 1.33 | 1.67 | 1.00 | 1.00 | 0.75 | 1.00 | 0.50 | 7.86 |
| 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 | 0.20 | 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 | 0.01 | 0.11 |
| I | 0.60 | 0.33 | 0.00 | 1.40 | 1.50 | 0.40 | 0.40 | 0.40 | 0.25 | 0.20 | 0.40 | 1.00 | 1.00 | 1.20 | 1.33 | 2.00 | 0.60 | 0.60 | 0.80 | 1.00 | 1.40 | 2.33 | 2.67 | 1.67 | 2.00 | 2.20 | 3.25 | 4.00 | 1.25 | 19.49 |
| x | 0.40 | 1.00 | 2.20 | 0.60 | 0.25 | 0.80 | 0.80 | 1.00 | 2.50 | 2.80 | 2.20 | 1.80 | 0.75 | 1.00 | 1.33 | 2.33 | 1.20 | 1.60 | 0.40 | 2.67 | 1.00 | 1.00 | 0.67 | 0.67 | 1.00 | 1.00 | 1.25 | 3.00 | 1.33 | 20.77 |
| r | 0.00 | 0.33 | 0.00 | 0.40 | 0.25 | 0.00 | 0.40 | 0.20 | 1.00 | 0.80 | 0.20 | 0.40 | 0.00 | 0.20 | 0.67 | 0.33 | 0.00 | 0.60 | 0.60 | 0.33 | 0.40 | 0.00 | 0.00 | 0.00 | 0.20 | 0.60 | 0.25 | 0.00 | 0.29 | 4.56 |
| s | 1.00 | 1.33 | 1.00 | 1.40 | 2.00 | 2.20 | 1.80 | 2.20 | 0.50 | 0.60 | 0.40 | 1.00 | 2.00 | 2.00 | 1.33 | 2.67 | 1.60 | 2.20 | 3.20 | 3.33 | 3.40 | 4.67 | 3.00 | 2.67 | 2.20 | 2.60 | 2.50 | 2.60 | 2.05 | 32.03 |
| a | 0.80 | 0.00 | 1.40 | 2.80 | 2.25 | 2.00 | 2.20 | 1.80 | 2.75 | 0.40 | 0.60 | 0.80 | 0.75 | 1.00 | 1.33 | 2.00 | 2.60 | 1.80 | 2.20 | 2.33 | 3.00 | 1.67 | 3.33 | 2.33 | 2.20 | 2.20 | 3.25 | 3.40 | 1.90 | 29.68 |
| h | 0.00 | 0.33 | 0.20 | 0.00 | 0.25 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 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 | 0.06 | 0.96 |
| k | 0.00 | 0.33 | 0.80 | 1.00 | 2.00 | 1.80 | 1.80 | 2.00 | 2.00 | 2.00 | 1.60 | 1.60 | 1.25 | 1.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.77 | 12.01 |
| x | 1.00 | 0.67 | 0.60 | 1.80 | 1.75 | 0.80 | 1.20 | 1.00 | 1.25 | 1.60 | 1.00 | 1.20 | 1.25 | 2.00 | 2.33 | 4.00 | 1.60 | 1.40 | 0.80 | 3.00 | 2.00 | 2.67 | 2.67 | 1.67 | 2.40 | 2.20 | 3.50 | 6.20 | 1.91 | 29.88 |
| o | 1.20 | 2.67 | 4.40 | 3.20 | 3.50 | 4.80 | 4.60 | 4.20 | 6.00 | 3.80 | 3.00 | 3.60 | 2.50 | 2.40 | 3.00 | 3.00 | 3.60 | 4.40 | 5.60 | 5.67 | 5.60 | 5.00 | 4.67 | 4.33 | 3.20 | 4.20 | 3.75 | 2.40 | 3.87 | 60.42 |
| i | 0.00 | 0.00 | 0.60 | 1.00 | 1.75 | 1.40 | 1.40 | 2.00 | 1.50 | 1.00 | 0.80 | 0.60 | 1.00 | 1.00 | 0.33 | 0.67 | 0.20 | 0.40 | 0.00 | 0.00 | 0.20 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.59 | 9.25 |
| c | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.20 | 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 | 0.45 |
| CV | 19.40 | 49.67 | 73.20 | 99.80 | 159.00 | 153.40 | 158.20 | 159.00 | 141.50 | 109.80 | 90.80 | 98.80 | 106.00 | 107.40 | 78.33 | 85.00 | 54.20 | 68.40 | 88.00 | 78.00 | 100.00 | 104.33 | 117.33 | 91.33 | 57.80 | 72.80 | 75.25 | 80.40 | 95.61 | 100 |
| CVn | 2.00 | 33.33 | 56.40 | 76.60 | 97.50 | 92.00 | 97.60 | 102.40 | 87.75 | 60.00 | 42.00 | 50.60 | 64.50 | 61.40 | 28.33 | 32.00 | 32.40 | 32.00 | 33.40 | 27.00 | 50.00 | 53.00 | 59.33 | 45.67 | 27.00 | 37.80 | 44.75 | 51.20 | 52.78 | 55.21 |
| CVs | 17.40 | 16.33 | 16.80 | 23.20 | 61.50 | 61.40 | 60.60 | 56.60 | 53.75 | 49.80 | 48.80 | 48.20 | 41.50 | 46.00 | 50.00 | 53.00 | 21.80 | 36.40 | 54.60 | 51.00 | 50.00 | 51.33 | 58.00 | 45.67 | 30.80 | 35.00 | 30.50 | 29.20 | 42.83 | 44.79 |
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