Statistics of sunspot activity
March, 1988
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 | 74.50 | 74.40 | 75.40 | 82.67 | 77.80 | 67.40 | 72.20 | 70.00 | 46.00 | 34.50 | 27.80 | 45.67 | 71.57 | 63.71 | 64.33 | 91.33 | 104.29 | 103.67 | 112.14 | 96.00 | 86.71 | 78.17 | 71.33 | 77.00 | 99.43 | 98.43 | 108.50 | 130.20 | 118.25 | 127.80 | 144.00 | 83.72 | 100 |
| Wn | 33.33 | 39.00 | 41.00 | 51.33 | 53.80 | 47.40 | 56.20 | 55.25 | 41.00 | 34.50 | 20.40 | 19.17 | 15.71 | 17.29 | 13.67 | 21.00 | 19.00 | 27.67 | 46.29 | 44.20 | 41.86 | 41.50 | 34.50 | 39.57 | 59.86 | 68.29 | 70.50 | 77.80 | 62.25 | 72.20 | 77.25 | 43.32 | 51.74 |
| Ws | 41.17 | 35.40 | 34.40 | 31.33 | 24.00 | 20.00 | 16.00 | 14.75 | 5.00 | 0.00 | 7.40 | 26.50 | 55.86 | 46.43 | 50.67 | 70.33 | 85.29 | 76.00 | 65.86 | 51.80 | 44.86 | 36.67 | 36.83 | 37.43 | 39.57 | 30.14 | 38.00 | 52.40 | 56.00 | 55.60 | 66.75 | 40.40 | 48.26 |
| n | 4.17 | 4.40 | 4.40 | 4.00 | 4.00 | 3.00 | 3.80 | 4.00 | 2.80 | 2.00 | 1.80 | 3.00 | 4.00 | 3.43 | 3.17 | 5.33 | 5.00 | 4.17 | 5.00 | 4.60 | 4.71 | 3.83 | 4.00 | 4.43 | 5.14 | 5.00 | 5.00 | 5.60 | 5.00 | 5.00 | 5.25 | 4.16 | 100 |
| A | 0.83 | 1.60 | 1.20 | 0.17 | 0.80 | 0.00 | 0.00 | 0.00 | 0.40 | 0.67 | 0.40 | 0.33 | 0.14 | 0.14 | 0.33 | 1.67 | 1.43 | 1.00 | 1.14 | 1.00 | 0.71 | 0.33 | 0.00 | 0.43 | 0.14 | 0.00 | 0.67 | 1.20 | 0.00 | 0.40 | 0.75 | 0.58 | 13.87 |
| B | 1.00 | 0.60 | 0.80 | 0.50 | 0.40 | 0.40 | 0.80 | 0.25 | 0.00 | 0.17 | 1.00 | 1.17 | 1.29 | 0.43 | 0.17 | 1.00 | 0.43 | 0.00 | 0.71 | 0.60 | 0.71 | 0.50 | 0.00 | 0.14 | 0.29 | 0.43 | 0.17 | 0.80 | 1.00 | 1.00 | 0.75 | 0.56 | 13.56 |
| C | 0.00 | 0.00 | 0.40 | 1.00 | 0.40 | 0.60 | 1.40 | 2.50 | 1.00 | 1.00 | 0.40 | 0.00 | 0.43 | 0.57 | 0.67 | 0.83 | 1.00 | 0.00 | 0.43 | 0.80 | 1.14 | 0.50 | 0.00 | 0.57 | 1.43 | 2.00 | 1.33 | 0.60 | 0.88 | 0.40 | 1.50 | 0.77 | 18.43 |
| D | 2.00 | 2.00 | 2.00 | 2.33 | 2.40 | 2.00 | 1.60 | 1.25 | 1.00 | 0.17 | 0.00 | 0.00 | 0.57 | 0.29 | 0.00 | 0.00 | 1.00 | 2.00 | 1.71 | 1.20 | 1.43 | 2.33 | 3.00 | 2.00 | 2.00 | 1.14 | 1.50 | 1.00 | 1.25 | 0.60 | 1.00 | 1.32 | 31.60 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.29 | 0.71 | 0.50 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.14 | 0.00 | 0.33 | 0.29 | 0.71 | 1.00 | 0.83 | 1.00 | 1.00 | 1.40 | 1.00 | 0.31 | 7.51 |
| 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 | 0.29 | 0.00 | 0.17 | 0.67 | 0.86 | 0.83 | 0.57 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 3.04 |
| G | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.14 | 0.33 | 0.33 | 0.14 | 0.17 | 0.29 | 0.60 | 0.29 | 0.00 | 0.33 | 0.43 | 0.14 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.12 | 2.91 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.57 | 0.43 | 0.50 | 0.33 | 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 | 0.08 | 1.94 |
| I | 0.33 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 0.00 | 0.50 | 0.43 | 0.71 | 0.50 | 0.50 | 0.14 | 0.17 | 0.00 | 0.00 | 0.29 | 0.00 | 0.33 | 0.57 | 0.29 | 0.29 | 0.50 | 1.00 | 0.88 | 1.20 | 0.00 | 0.30 | 7.15 |
| x | 1.83 | 2.20 | 2.00 | 0.67 | 1.20 | 0.40 | 0.80 | 0.25 | 0.40 | 0.83 | 1.40 | 1.50 | 1.43 | 0.57 | 0.50 | 2.67 | 1.86 | 1.00 | 1.86 | 1.60 | 1.43 | 0.83 | 0.00 | 0.57 | 0.43 | 0.43 | 0.83 | 2.00 | 1.00 | 1.40 | 1.50 | 1.14 | 27.43 |
| r | 0.33 | 0.20 | 0.40 | 0.67 | 0.00 | 0.20 | 1.00 | 1.00 | 0.40 | 0.67 | 0.40 | 0.00 | 0.29 | 0.43 | 0.50 | 0.33 | 0.43 | 0.50 | 0.57 | 0.20 | 0.71 | 0.00 | 0.00 | 0.00 | 0.14 | 0.43 | 0.17 | 0.00 | 0.13 | 0.20 | 0.50 | 0.35 | 8.36 |
| s | 0.17 | 0.40 | 0.60 | 0.67 | 0.80 | 1.20 | 1.40 | 1.50 | 1.60 | 0.00 | 0.00 | 1.00 | 0.43 | 0.43 | 0.50 | 0.67 | 0.86 | 0.83 | 0.57 | 0.80 | 0.86 | 1.50 | 2.67 | 1.29 | 1.43 | 1.86 | 2.00 | 2.00 | 1.88 | 1.20 | 1.25 | 1.04 | 25.06 |
| a | 1.83 | 1.40 | 1.40 | 1.83 | 2.00 | 1.20 | 0.60 | 1.25 | 0.40 | 0.50 | 0.00 | 0.00 | 1.14 | 0.57 | 0.17 | 0.33 | 0.71 | 0.67 | 1.00 | 1.00 | 0.71 | 0.83 | 1.17 | 2.43 | 2.43 | 1.57 | 1.67 | 1.40 | 1.25 | 1.60 | 1.75 | 1.12 | 26.99 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.29 | 0.29 | 0.50 | 0.50 | 0.29 | 0.17 | 0.29 | 0.00 | 0.14 | 0.33 | 0.17 | 0.00 | 0.29 | 0.14 | 0.00 | 0.00 | 0.00 | 0.40 | 0.25 | 0.14 | 3.38 |
| k | 0.00 | 0.20 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.43 | 1.14 | 1.00 | 0.83 | 0.86 | 1.00 | 0.71 | 1.00 | 0.86 | 0.33 | 0.00 | 0.14 | 0.43 | 0.57 | 0.33 | 0.20 | 0.75 | 0.20 | 0.00 | 0.37 | 8.78 |
| x | 1.17 | 1.80 | 1.20 | 0.17 | 0.80 | 0.00 | 0.00 | 0.00 | 0.80 | 0.67 | 0.40 | 1.33 | 1.14 | 1.29 | 1.33 | 2.50 | 1.57 | 1.17 | 1.14 | 1.00 | 1.00 | 0.50 | 0.33 | 1.00 | 0.43 | 0.29 | 1.17 | 2.20 | 0.88 | 1.60 | 0.75 | 0.96 | 22.95 |
| o | 2.00 | 2.00 | 2.60 | 2.83 | 1.40 | 1.40 | 2.00 | 2.75 | 1.60 | 1.00 | 1.40 | 1.00 | 2.00 | 1.29 | 1.17 | 2.17 | 1.57 | 1.00 | 2.14 | 2.40 | 2.71 | 2.00 | 3.00 | 2.57 | 3.43 | 3.71 | 2.67 | 1.60 | 2.75 | 1.20 | 3.00 | 2.08 | 49.88 |
| i | 1.00 | 0.60 | 0.60 | 1.00 | 1.80 | 1.40 | 1.80 | 1.25 | 0.40 | 0.33 | 0.00 | 0.67 | 0.86 | 0.86 | 0.67 | 0.67 | 1.71 | 1.83 | 1.43 | 1.00 | 1.00 | 1.33 | 0.50 | 0.86 | 1.00 | 0.86 | 1.17 | 1.60 | 1.38 | 2.00 | 1.25 | 1.06 | 25.43 |
| c | 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 | 0.14 | 0.17 | 0.29 | 0.20 | 0.00 | 0.00 | 0.17 | 0.00 | 0.29 | 0.14 | 0.00 | 0.20 | 0.00 | 0.20 | 0.25 | 0.07 | 1.74 |
| CV | 46.17 | 50.60 | 48.20 | 62.00 | 58.20 | 54.40 | 48.40 | 50.00 | 36.80 | 10.50 | 4.40 | 41.50 | 60.14 | 76.43 | 76.67 | 76.67 | 88.43 | 99.17 | 94.14 | 84.40 | 78.86 | 81.83 | 96.17 | 73.57 | 103.29 | 91.29 | 80.33 | 74.60 | 89.00 | 82.60 | 76.25 | 67.58 | 100 |
| CVn | 22.17 | 23.20 | 24.80 | 36.67 | 35.60 | 32.40 | 30.80 | 38.25 | 34.40 | 10.50 | 3.40 | 25.50 | 26.43 | 21.57 | 23.50 | 19.83 | 17.57 | 28.50 | 29.14 | 27.20 | 27.29 | 42.00 | 48.00 | 35.86 | 56.57 | 56.14 | 41.00 | 38.40 | 35.75 | 34.80 | 27.00 | 30.78 | 45.55 |
| CVs | 24.00 | 27.40 | 23.40 | 25.33 | 22.60 | 22.00 | 17.60 | 11.75 | 2.40 | 0.00 | 1.00 | 16.00 | 33.71 | 54.86 | 53.17 | 56.83 | 70.86 | 70.67 | 65.00 | 57.20 | 51.57 | 39.83 | 48.17 | 37.71 | 46.71 | 35.14 | 39.33 | 36.20 | 53.25 | 47.80 | 49.25 | 36.80 | 54.45 |
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