Statistics of sunspot activity
February, 1992
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 | Average | % |
| W | 350.83 | 297.20 | 250.33 | 255.50 | 246.00 | 246.67 | 275.20 | 229.00 | 258.00 | 232.17 | 234.40 | 193.33 | 202.00 | 182.40 | 166.50 | 164.17 | 133.33 | 144.00 | 133.60 | 178.75 | 188.00 | 181.83 | 218.20 | 246.00 | 254.00 | 269.17 | 292.17 | 249.83 | 195.17 | 223.03 | 100 |
| Wn | 96.83 | 90.60 | 68.00 | 52.83 | 48.29 | 44.67 | 63.80 | 76.60 | 107.67 | 103.67 | 105.60 | 104.33 | 100.00 | 70.00 | 59.17 | 53.00 | 45.17 | 38.00 | 48.00 | 79.25 | 85.40 | 97.17 | 129.20 | 154.80 | 165.20 | 179.33 | 181.17 | 139.83 | 113.17 | 93.13 | 41.76 |
| Ws | 254.00 | 206.60 | 182.33 | 202.67 | 197.71 | 202.00 | 211.40 | 152.40 | 150.33 | 128.50 | 128.80 | 89.00 | 102.00 | 112.40 | 107.33 | 111.17 | 88.17 | 106.00 | 85.60 | 99.50 | 102.60 | 84.67 | 89.00 | 91.20 | 88.80 | 89.83 | 111.00 | 110.00 | 82.00 | 129.90 | 58.24 |
| n | 15.17 | 12.60 | 10.50 | 12.00 | 11.86 | 10.67 | 11.00 | 11.80 | 12.50 | 10.83 | 10.20 | 8.17 | 9.25 | 9.20 | 8.67 | 9.33 | 7.33 | 8.83 | 8.00 | 10.50 | 11.40 | 10.33 | 12.60 | 14.00 | 12.60 | 11.83 | 12.00 | 12.33 | 10.67 | 10.90 | 100 |
| A | 1.67 | 1.80 | 0.50 | 2.83 | 2.43 | 1.83 | 0.60 | 1.00 | 1.67 | 0.83 | 0.20 | 1.50 | 1.75 | 1.60 | 1.83 | 1.83 | 1.17 | 2.50 | 1.40 | 0.75 | 1.00 | 0.83 | 1.20 | 2.20 | 0.80 | 0.67 | 0.67 | 1.83 | 1.67 | 1.40 | 12.83 |
| B | 1.83 | 0.60 | 0.67 | 1.00 | 2.14 | 1.33 | 3.60 | 1.60 | 1.33 | 1.50 | 1.80 | 0.33 | 0.75 | 0.80 | 1.83 | 1.33 | 0.33 | 1.83 | 1.80 | 3.00 | 2.40 | 1.33 | 2.80 | 1.40 | 1.80 | 1.00 | 1.67 | 2.33 | 1.83 | 1.59 | 14.55 |
| C | 3.17 | 2.60 | 2.17 | 1.83 | 3.43 | 2.50 | 1.40 | 0.80 | 2.33 | 1.33 | 1.20 | 0.67 | 1.00 | 1.40 | 1.17 | 1.17 | 1.67 | 0.67 | 0.60 | 2.50 | 3.20 | 3.67 | 4.00 | 3.40 | 2.60 | 3.00 | 4.00 | 3.83 | 2.17 | 2.19 | 20.07 |
| D | 2.33 | 2.60 | 1.33 | 1.83 | 1.29 | 1.17 | 1.20 | 3.80 | 4.33 | 3.50 | 3.40 | 2.67 | 2.50 | 3.00 | 1.33 | 1.50 | 1.33 | 1.33 | 1.40 | 0.75 | 1.40 | 2.50 | 2.20 | 2.40 | 2.00 | 1.50 | 2.17 | 2.67 | 3.33 | 2.16 | 19.85 |
| E | 1.00 | 0.60 | 0.33 | 0.50 | 0.14 | 0.50 | 0.20 | 0.20 | 0.17 | 1.00 | 1.40 | 0.50 | 0.50 | 0.80 | 1.33 | 1.33 | 0.33 | 0.33 | 0.60 | 1.25 | 0.80 | 0.83 | 0.40 | 1.00 | 1.60 | 1.83 | 1.33 | 0.50 | 0.50 | 0.75 | 6.90 |
| F | 1.83 | 1.40 | 1.50 | 1.50 | 1.43 | 1.33 | 1.40 | 0.40 | 0.50 | 1.00 | 0.80 | 1.33 | 0.75 | 0.60 | 0.33 | 0.00 | 0.50 | 0.50 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.17 | 0.61 | 5.63 |
| G | 2.00 | 1.60 | 1.83 | 0.50 | 0.29 | 0.50 | 1.00 | 1.40 | 1.17 | 1.00 | 1.00 | 1.00 | 1.25 | 0.00 | 0.00 | 0.33 | 0.33 | 0.00 | 0.40 | 0.50 | 0.20 | 0.00 | 0.80 | 0.40 | 1.00 | 0.83 | 0.50 | 0.17 | 0.67 | 0.71 | 6.54 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.40 | 0.00 | 0.20 | 0.17 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.47 |
| I | 1.33 | 1.40 | 2.17 | 2.00 | 0.71 | 1.33 | 1.60 | 2.60 | 1.00 | 0.67 | 0.40 | 0.17 | 0.75 | 1.00 | 0.83 | 1.83 | 1.67 | 1.50 | 1.20 | 1.75 | 2.20 | 1.00 | 1.00 | 3.00 | 2.80 | 3.00 | 1.67 | 0.67 | 0.33 | 1.43 | 13.15 |
| x | 3.50 | 2.40 | 1.17 | 3.83 | 4.57 | 3.17 | 4.20 | 2.60 | 3.00 | 2.33 | 2.00 | 1.83 | 2.50 | 2.40 | 3.67 | 3.17 | 1.50 | 4.33 | 3.20 | 3.75 | 3.40 | 2.17 | 4.00 | 3.60 | 2.60 | 1.67 | 2.33 | 4.17 | 3.50 | 2.98 | 27.38 |
| r | 0.17 | 0.40 | 0.67 | 0.17 | 0.14 | 0.67 | 0.60 | 0.20 | 0.33 | 0.67 | 0.00 | 0.33 | 0.50 | 1.00 | 0.17 | 0.00 | 0.33 | 0.00 | 0.20 | 0.50 | 0.40 | 0.67 | 0.40 | 0.20 | 0.00 | 0.17 | 0.33 | 0.00 | 0.33 | 0.33 | 3.02 |
| s | 3.83 | 3.20 | 2.33 | 2.50 | 2.43 | 2.50 | 1.00 | 2.60 | 2.50 | 1.83 | 2.60 | 1.83 | 0.00 | 0.40 | 2.17 | 2.67 | 2.17 | 2.00 | 1.40 | 2.50 | 3.00 | 3.33 | 2.20 | 4.20 | 3.80 | 2.67 | 2.67 | 3.50 | 3.00 | 2.44 | 22.40 |
| a | 4.50 | 3.60 | 3.17 | 2.50 | 1.86 | 2.00 | 2.40 | 4.80 | 5.00 | 4.33 | 2.80 | 1.83 | 4.25 | 3.40 | 1.00 | 1.50 | 2.17 | 1.33 | 1.00 | 2.25 | 2.40 | 1.33 | 2.60 | 3.00 | 2.20 | 4.50 | 3.83 | 2.33 | 2.00 | 2.75 | 25.27 |
| h | 1.00 | 0.40 | 0.17 | 0.00 | 0.00 | 0.17 | 0.00 | 0.20 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.17 | 0.40 | 0.00 | 0.20 | 1.00 | 1.00 | 0.20 | 1.20 | 0.33 | 0.00 | 0.17 | 0.33 | 0.26 | 2.36 |
| k | 2.17 | 2.60 | 3.00 | 3.00 | 2.86 | 2.17 | 2.80 | 1.40 | 1.33 | 1.67 | 2.80 | 2.33 | 2.00 | 1.80 | 1.67 | 2.00 | 1.17 | 1.00 | 1.80 | 1.50 | 2.00 | 1.83 | 2.40 | 2.80 | 2.80 | 2.50 | 2.83 | 2.17 | 1.50 | 2.13 | 19.57 |
| x | 3.00 | 3.20 | 2.67 | 4.83 | 3.14 | 3.33 | 2.20 | 3.60 | 2.67 | 1.50 | 0.60 | 1.67 | 2.50 | 2.60 | 2.67 | 3.67 | 2.83 | 4.17 | 3.00 | 2.50 | 3.40 | 2.00 | 2.40 | 5.40 | 3.60 | 3.67 | 2.33 | 2.50 | 2.00 | 2.88 | 26.45 |
| o | 8.83 | 7.40 | 5.50 | 4.50 | 7.14 | 5.33 | 7.00 | 7.00 | 8.33 | 6.83 | 7.40 | 4.17 | 5.25 | 4.60 | 3.83 | 3.83 | 3.33 | 3.50 | 3.80 | 6.25 | 6.80 | 7.00 | 9.00 | 6.20 | 7.00 | 5.83 | 7.00 | 8.00 | 7.33 | 6.14 | 56.30 |
| i | 3.33 | 2.00 | 2.33 | 2.67 | 1.43 | 1.67 | 1.20 | 1.20 | 1.50 | 2.50 | 2.20 | 2.33 | 1.25 | 1.60 | 2.00 | 1.67 | 0.83 | 1.00 | 1.00 | 1.25 | 0.80 | 1.17 | 1.00 | 2.20 | 2.00 | 1.83 | 1.83 | 1.33 | 1.00 | 1.66 | 15.22 |
| c | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.33 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.40 | 0.17 | 0.17 | 0.33 | 0.17 | 0.20 | 0.50 | 0.40 | 0.17 | 0.20 | 0.20 | 0.00 | 0.50 | 0.83 | 0.50 | 0.33 | 0.22 | 2.02 |
| CV | 290.67 | 255.60 | 225.33 | 208.17 | 185.43 | 178.83 | 186.40 | 196.20 | 206.33 | 201.00 | 234.00 | 189.33 | 168.00 | 164.60 | 136.67 | 151.67 | 116.00 | 106.67 | 137.40 | 140.00 | 168.60 | 199.33 | 219.40 | 226.00 | 261.60 | 220.00 | 223.33 | 196.33 | 182.33 | 192.25 | 100 |
| CVn | 92.50 | 90.40 | 71.00 | 63.50 | 54.86 | 58.67 | 63.60 | 84.00 | 77.33 | 79.33 | 104.60 | 102.00 | 81.00 | 68.00 | 54.83 | 69.00 | 43.67 | 35.67 | 63.20 | 77.00 | 94.60 | 120.50 | 141.60 | 150.40 | 168.80 | 147.33 | 151.33 | 131.17 | 128.00 | 92.00 | 47.85 |
| CVs | 198.17 | 165.20 | 154.33 | 144.67 | 130.57 | 120.17 | 122.80 | 112.20 | 129.00 | 121.67 | 129.40 | 87.33 | 87.00 | 96.60 | 81.83 | 82.67 | 72.33 | 71.00 | 74.20 | 63.00 | 74.00 | 78.83 | 77.80 | 75.60 | 92.80 | 72.67 | 72.00 | 65.17 | 54.33 | 100.25 | 52.15 |
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