Statistics of sunspot activity
May, 1985
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 | 19.00 | 21.33 | 20.75 | 22.83 | 18.83 | 22.00 | 41.00 | 57.80 | 59.67 | 59.25 | 58.25 | 39.00 | 46.80 | 35.75 | 36.17 | 30.67 | 47.50 | 41.00 | 42.75 | 40.60 | 45.80 | 32.20 | 38.20 | 33.43 | 25.80 | 15.60 | 11.50 | 13.00 | 12.33 | 11.00 | 0.00 | 32.25 | 100 |
| Wn | 19.00 | 21.33 | 20.75 | 22.83 | 18.83 | 22.00 | 25.83 | 39.80 | 35.17 | 27.75 | 24.25 | 5.50 | 9.60 | 3.00 | 1.83 | 0.00 | 22.50 | 18.00 | 20.75 | 26.20 | 33.00 | 20.60 | 27.20 | 22.43 | 14.40 | 4.60 | 6.00 | 13.00 | 12.33 | 11.00 | 0.00 | 17.73 | 54.96 |
| Ws | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 15.17 | 18.00 | 24.50 | 31.50 | 34.00 | 33.50 | 37.20 | 32.75 | 34.33 | 30.67 | 25.00 | 23.00 | 22.00 | 14.40 | 12.80 | 11.60 | 11.00 | 11.00 | 11.40 | 11.00 | 5.50 | 0.00 | 0.00 | 0.00 | 0.00 | 14.53 | 45.04 |
| n | 1.00 | 1.67 | 1.75 | 1.83 | 1.50 | 1.75 | 2.67 | 3.40 | 3.67 | 3.00 | 3.00 | 1.50 | 2.00 | 1.50 | 1.83 | 2.00 | 3.50 | 3.00 | 3.25 | 2.20 | 2.40 | 2.00 | 2.60 | 2.57 | 2.20 | 1.40 | 1.00 | 1.00 | 1.00 | 1.00 | 0.00 | 2.04 | 100 |
| A | 0.00 | 0.33 | 0.75 | 1.00 | 0.33 | 0.50 | 0.33 | 1.00 | 0.33 | 0.25 | 1.00 | 0.50 | 0.80 | 0.50 | 0.50 | 0.00 | 0.50 | 0.00 | 0.25 | 0.00 | 0.40 | 0.00 | 0.40 | 0.29 | 1.20 | 0.40 | 0.50 | 1.00 | 0.00 | 1.00 | 0.00 | 0.45 | 22.27 |
| B | 0.00 | 0.33 | 0.00 | 0.17 | 1.00 | 1.00 | 0.83 | 0.40 | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.86 | 0.20 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.31 | 15.02 |
| C | 0.00 | 0.00 | 1.00 | 0.67 | 0.00 | 0.25 | 0.67 | 0.00 | 0.50 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.67 | 1.25 | 1.50 | 0.00 | 0.20 | 1.20 | 0.80 | 1.00 | 0.43 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.36 | 17.48 |
| D | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 2.00 | 1.83 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.83 | 0.33 | 0.00 | 0.00 | 1.00 | 1.40 | 0.60 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.51 | 25.11 |
| 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 | 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 | 0.00 |
| G | 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 | 0.00 | 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 | 0.26 |
| 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 | 0.00 | 0.00 | 0.00 | 0.25 | 1.00 | 0.50 | 0.60 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 4.04 |
| I | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.33 | 1.00 | 1.00 | 0.50 | 1.50 | 0.00 | 0.20 | 1.00 | 0.80 | 1.00 | 0.80 | 1.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.32 | 15.83 |
| x | 0.00 | 0.67 | 0.75 | 1.17 | 1.33 | 1.50 | 1.17 | 1.40 | 1.33 | 1.25 | 2.00 | 0.50 | 0.80 | 0.50 | 0.50 | 0.00 | 1.00 | 0.00 | 0.25 | 0.00 | 0.40 | 0.00 | 0.60 | 1.14 | 1.40 | 0.40 | 0.50 | 1.00 | 1.00 | 1.00 | 0.00 | 0.76 | 37.28 |
| r | 0.00 | 0.00 | 0.75 | 0.50 | 0.00 | 0.25 | 0.33 | 0.20 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 3.48 |
| s | 0.00 | 0.33 | 0.00 | 0.17 | 0.17 | 0.00 | 0.33 | 0.20 | 0.50 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.83 | 1.00 | 0.50 | 1.00 | 0.20 | 1.20 | 1.40 | 1.00 | 1.14 | 0.80 | 1.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.42 | 20.75 |
| a | 0.67 | 0.67 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.80 | 0.67 | 0.25 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.17 | 0.50 | 1.50 | 1.25 | 1.40 | 0.80 | 0.60 | 0.80 | 0.29 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.35 | 17.10 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.40 | 0.17 | 0.25 | 0.00 | 0.00 | 0.40 | 0.00 | 0.17 | 0.83 | 0.75 | 1.00 | 0.50 | 0.60 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.18 | 8.60 |
| k | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.40 | 0.83 | 0.75 | 1.00 | 1.00 | 0.60 | 1.00 | 0.83 | 0.17 | 0.25 | 0.00 | 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 | 0.26 | 12.79 |
| x | 0.00 | 0.33 | 0.75 | 1.00 | 0.50 | 0.50 | 0.33 | 1.00 | 0.33 | 0.25 | 1.00 | 0.50 | 1.00 | 0.50 | 0.83 | 1.00 | 1.75 | 1.50 | 2.25 | 0.60 | 0.60 | 1.00 | 1.40 | 1.29 | 2.00 | 1.40 | 1.00 | 1.00 | 0.00 | 1.00 | 0.00 | 0.86 | 42.13 |
| o | 0.67 | 1.33 | 1.00 | 0.83 | 1.00 | 1.25 | 2.00 | 1.80 | 2.17 | 1.75 | 1.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.83 | 1.75 | 1.50 | 0.75 | 1.40 | 1.60 | 0.80 | 0.80 | 1.29 | 0.20 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.89 | 43.47 |
| i | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.60 | 1.17 | 1.00 | 1.00 | 1.00 | 1.00 | 0.75 | 0.50 | 0.17 | 0.00 | 0.00 | 0.25 | 0.20 | 0.20 | 0.20 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 14.40 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| CV | 28.00 | 22.00 | 6.50 | 5.67 | 4.00 | 3.75 | 45.50 | 63.20 | 71.33 | 57.25 | 49.00 | 46.50 | 50.60 | 45.75 | 48.50 | 53.17 | 55.50 | 57.00 | 59.50 | 53.40 | 27.20 | 21.60 | 25.80 | 15.86 | 9.60 | 10.40 | 5.50 | 1.00 | 2.00 | 1.00 | 0.00 | 30.52 | 100 |
| CVn | 28.00 | 22.00 | 6.50 | 5.67 | 4.00 | 3.75 | 6.83 | 20.80 | 24.00 | 9.75 | 3.00 | 0.50 | 2.00 | 0.25 | 0.17 | 0.00 | 5.50 | 8.00 | 26.00 | 19.60 | 16.40 | 11.60 | 9.80 | 5.86 | 1.40 | 0.40 | 0.50 | 1.00 | 2.00 | 1.00 | 0.00 | 7.94 | 26.03 |
| CVs | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 38.67 | 42.40 | 47.33 | 47.50 | 46.00 | 46.00 | 48.60 | 45.50 | 48.33 | 53.17 | 50.00 | 49.00 | 33.50 | 33.80 | 10.80 | 10.00 | 16.00 | 10.00 | 8.20 | 10.00 | 5.00 | 0.00 | 0.00 | 0.00 | 0.00 | 22.57 | 73.97 |
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