Statistics of sunspot activity
April, 1986
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 | Average | % |
| W | 13.00 | 11.00 | 11.00 | 0.00 | 0.00 | 0.00 | 11.00 | 11.00 | 0.00 | 11.00 | 13.75 | 15.67 | 13.20 | 34.50 | 23.40 | 20.80 | 13.33 | 11.80 | 12.00 | 20.17 | 40.00 | 23.83 | 65.20 | 67.20 | 51.17 | 44.80 | 37.20 | 28.17 | 32.67 | 26.00 | 22.10 | 100 |
| Wn | 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 | 3.83 | 4.60 | 9.60 | 13.33 | 11.80 | 12.00 | 12.83 | 12.60 | 14.50 | 57.40 | 62.60 | 51.17 | 44.80 | 37.20 | 28.17 | 32.67 | 26.00 | 14.50 | 65.64 |
| Ws | 13.00 | 11.00 | 11.00 | 0.00 | 0.00 | 0.00 | 11.00 | 11.00 | 0.00 | 11.00 | 13.75 | 15.67 | 13.20 | 30.67 | 18.80 | 11.20 | 0.00 | 0.00 | 0.00 | 7.33 | 27.40 | 9.33 | 7.80 | 4.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 7.59 | 34.36 |
| n | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.00 | 1.00 | 1.00 | 1.00 | 1.00 | 2.83 | 2.00 | 1.80 | 1.00 | 1.00 | 1.00 | 1.67 | 3.20 | 1.67 | 3.00 | 3.00 | 2.00 | 1.80 | 1.40 | 1.33 | 2.00 | 1.75 | 1.38 | 100 |
| A | 0.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.00 | 1.00 | 0.75 | 0.50 | 0.20 | 0.50 | 0.80 | 0.80 | 0.00 | 0.00 | 0.00 | 0.67 | 1.20 | 0.00 | 0.60 | 1.00 | 0.17 | 0.20 | 0.00 | 0.17 | 0.00 | 0.00 | 0.42 | 30.28 |
| B | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.17 | 0.00 | 1.17 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.80 | 0.50 | 0.60 | 0.20 | 0.33 | 0.40 | 0.40 | 0.17 | 0.83 | 1.00 | 0.27 | 19.82 |
| C | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.80 | 0.17 | 0.20 | 0.00 | 0.67 | 0.00 | 0.00 | 0.33 | 1.00 | 1.00 | 0.60 | 0.40 | 0.17 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.19 | 14.07 |
| D | 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 | 0.20 | 0.17 | 0.00 | 0.00 | 1.20 | 1.40 | 1.33 | 1.00 | 1.00 | 0.83 | 1.00 | 0.50 | 0.29 | 20.83 |
| E | 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 |
| 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 |
| G | 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 | 0.17 | 0.00 | 0.25 | 0.01 | 1.01 |
| 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 | 0.33 | 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 | 0.02 | 1.77 |
| I | 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 | 0.67 | 0.40 | 0.80 | 0.33 | 1.00 | 0.80 | 0.50 | 0.20 | 0.17 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 12.22 |
| x | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.00 | 1.00 | 1.00 | 0.67 | 0.20 | 1.67 | 1.20 | 0.80 | 0.00 | 0.00 | 0.00 | 0.67 | 2.00 | 0.50 | 1.20 | 1.20 | 0.50 | 0.60 | 0.40 | 0.33 | 0.83 | 1.00 | 0.69 | 50.10 |
| r | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.60 | 0.60 | 0.50 | 0.20 | 0.00 | 0.00 | 0.17 | 0.00 | 0.11 | 7.64 |
| s | 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 | 0.67 | 0.40 | 0.60 | 1.00 | 1.00 | 0.80 | 0.67 | 0.60 | 0.33 | 0.20 | 0.20 | 0.00 | 0.00 | 0.20 | 0.00 | 0.17 | 0.00 | 0.23 | 16.49 |
| a | 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 | 0.17 | 0.20 | 0.20 | 0.00 | 0.00 | 0.20 | 0.33 | 0.60 | 0.67 | 0.80 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.50 | 0.13 | 9.73 |
| 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 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.20 | 0.17 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 2.25 |
| k | 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 | 0.17 | 0.20 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.80 | 0.83 | 0.80 | 0.80 | 0.83 | 0.83 | 0.25 | 0.19 | 13.79 |
| x | 0.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.00 | 1.00 | 0.75 | 0.50 | 0.20 | 1.50 | 1.40 | 1.80 | 0.33 | 1.00 | 0.80 | 1.17 | 1.40 | 0.17 | 0.60 | 1.00 | 0.17 | 0.40 | 0.00 | 0.17 | 0.00 | 0.00 | 0.61 | 44.27 |
| o | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.80 | 1.33 | 0.60 | 0.00 | 0.67 | 0.00 | 0.20 | 0.50 | 1.80 | 1.50 | 2.00 | 1.00 | 1.00 | 0.60 | 0.40 | 1.17 | 1.83 | 1.75 | 0.62 | 45.20 |
| i | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 1.00 | 0.83 | 0.60 | 1.00 | 0.00 | 0.17 | 0.00 | 0.14 | 10.05 |
| 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 | 0.00 | 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 | 0.01 | 0.48 |
| CV | 2.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.00 | 1.00 | 1.25 | 2.67 | 4.80 | 23.67 | 14.60 | 15.60 | 10.67 | 10.00 | 12.40 | 12.50 | 14.00 | 10.67 | 34.20 | 57.00 | 52.50 | 50.20 | 43.20 | 39.67 | 42.00 | 22.50 | 16.04 | 100 |
| CVn | 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 | 12.83 | 8.80 | 12.80 | 10.67 | 10.00 | 12.40 | 11.83 | 6.20 | 4.83 | 30.20 | 56.60 | 52.50 | 50.20 | 43.20 | 39.67 | 42.00 | 22.50 | 14.24 | 88.81 |
| CVs | 2.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.00 | 1.00 | 1.25 | 2.67 | 4.80 | 10.83 | 5.80 | 2.80 | 0.00 | 0.00 | 0.00 | 0.67 | 7.80 | 5.83 | 4.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.80 | 11.19 |
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