Statistics of sunspot activity
December, 1983
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 | 44.80 | 37.67 | 26.67 | 20.80 | 38.75 | 49.80 | 72.20 | 89.40 | 120.25 | 133.20 | 101.00 | 90.20 | 89.75 | 59.20 | 71.67 | 44.50 | 61.67 | 46.20 | 38.83 | 29.60 | 29.60 | 26.33 | 23.20 | 23.75 | 25.00 | 42.25 | 19.75 | 12.00 | 15.71 | 20.50 | 11.00 | 48.88 | 100 |
| Wn | 42.60 | 37.67 | 23.00 | 11.60 | 5.50 | 5.00 | 0.00 | 18.80 | 56.75 | 47.80 | 36.50 | 36.40 | 29.00 | 17.80 | 23.33 | 17.67 | 15.67 | 10.60 | 9.67 | 2.20 | 4.60 | 0.00 | 6.60 | 14.00 | 17.00 | 27.25 | 14.25 | 12.00 | 15.71 | 20.50 | 11.00 | 19.05 | 38.97 |
| Ws | 2.20 | 0.00 | 3.67 | 9.20 | 33.25 | 44.80 | 72.20 | 70.60 | 63.50 | 85.40 | 64.50 | 53.80 | 60.75 | 41.40 | 48.33 | 26.83 | 46.00 | 35.60 | 29.17 | 27.40 | 25.00 | 26.33 | 16.60 | 9.75 | 8.00 | 15.00 | 5.50 | 0.00 | 0.00 | 0.00 | 0.00 | 29.83 | 61.03 |
| n | 3.00 | 2.33 | 1.67 | 1.60 | 3.00 | 3.20 | 3.80 | 4.80 | 5.00 | 6.60 | 5.17 | 5.00 | 4.75 | 3.40 | 4.00 | 2.67 | 4.00 | 2.60 | 1.83 | 1.20 | 1.40 | 1.00 | 1.60 | 1.75 | 2.00 | 3.50 | 1.75 | 1.00 | 1.14 | 1.50 | 1.00 | 2.81 | 100 |
| A | 0.80 | 1.00 | 0.67 | 0.40 | 0.75 | 0.40 | 0.60 | 0.60 | 0.25 | 1.00 | 0.50 | 1.00 | 0.50 | 0.60 | 0.00 | 0.50 | 0.33 | 0.00 | 0.33 | 0.20 | 0.20 | 0.00 | 0.40 | 0.00 | 0.33 | 1.75 | 1.50 | 0.00 | 0.00 | 0.00 | 1.00 | 0.50 | 17.90 |
| B | 1.40 | 0.67 | 0.67 | 1.00 | 0.50 | 0.40 | 1.00 | 1.80 | 1.00 | 1.00 | 0.33 | 0.60 | 1.00 | 0.60 | 0.67 | 0.33 | 0.67 | 0.80 | 0.17 | 0.00 | 0.20 | 0.00 | 0.00 | 0.25 | 0.00 | 1.00 | 0.25 | 1.00 | 1.00 | 1.50 | 0.00 | 0.64 | 22.69 |
| C | 0.60 | 0.33 | 0.00 | 0.00 | 1.50 | 1.20 | 1.00 | 0.80 | 1.75 | 1.60 | 1.67 | 1.40 | 2.25 | 1.00 | 1.67 | 0.67 | 1.00 | 0.60 | 0.33 | 0.40 | 0.40 | 0.00 | 0.60 | 1.50 | 1.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.77 | 27.24 |
| D | 0.20 | 0.33 | 0.33 | 0.00 | 0.25 | 1.00 | 1.20 | 0.80 | 1.50 | 2.60 | 2.17 | 1.80 | 0.75 | 0.20 | 1.33 | 1.17 | 1.33 | 0.20 | 0.33 | 0.20 | 0.00 | 0.33 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.60 | 21.21 |
| 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 | 0.00 | 0.40 | 0.50 | 0.40 | 0.00 | 0.00 | 0.25 | 0.80 | 0.33 | 0.00 | 0.00 | 0.40 | 0.67 | 0.40 | 0.60 | 0.67 | 0.40 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 7.05 |
| 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 | 0.00 | 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 | 0.01 | 0.23 |
| I | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.20 | 0.00 | 0.40 | 0.00 | 0.00 | 0.50 | 0.20 | 0.00 | 0.20 | 0.00 | 0.00 | 0.67 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 3.69 |
| x | 2.20 | 1.67 | 1.33 | 1.40 | 1.25 | 0.80 | 1.60 | 2.40 | 1.25 | 2.00 | 0.83 | 1.60 | 1.50 | 1.20 | 0.67 | 0.83 | 1.00 | 0.80 | 0.50 | 0.20 | 0.40 | 0.00 | 0.40 | 0.25 | 0.33 | 2.75 | 1.75 | 1.00 | 1.00 | 1.50 | 1.00 | 1.14 | 40.59 |
| r | 0.40 | 0.00 | 0.00 | 0.00 | 0.75 | 0.40 | 0.20 | 0.40 | 0.75 | 0.40 | 0.17 | 0.20 | 0.25 | 0.00 | 1.33 | 0.33 | 0.67 | 0.20 | 0.17 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.24 | 8.64 |
| s | 0.20 | 0.67 | 0.33 | 0.00 | 0.25 | 1.00 | 0.40 | 1.20 | 1.25 | 1.40 | 1.50 | 1.40 | 1.50 | 1.20 | 1.67 | 1.00 | 1.00 | 1.20 | 0.50 | 0.80 | 0.60 | 0.33 | 0.60 | 1.25 | 0.67 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.72 | 25.40 |
| a | 0.20 | 0.00 | 0.00 | 0.20 | 0.75 | 0.80 | 1.40 | 0.80 | 1.75 | 2.80 | 2.67 | 1.80 | 1.50 | 1.00 | 0.33 | 0.50 | 1.33 | 0.20 | 0.50 | 0.20 | 0.20 | 0.33 | 0.40 | 0.25 | 0.67 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 23.88 |
| 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 | 0.00 | 0.20 | 0.17 | 0.00 | 0.20 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 1.03 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.46 |
| x | 0.80 | 1.00 | 0.67 | 0.60 | 0.75 | 0.60 | 0.60 | 1.00 | 0.25 | 1.00 | 1.00 | 1.20 | 0.50 | 0.80 | 0.00 | 0.50 | 1.00 | 0.60 | 0.33 | 0.20 | 0.20 | 0.00 | 0.60 | 0.00 | 0.33 | 2.00 | 1.50 | 0.00 | 0.00 | 0.00 | 1.00 | 0.61 | 21.81 |
| o | 2.20 | 1.33 | 1.00 | 1.00 | 2.00 | 2.40 | 2.40 | 3.60 | 4.75 | 5.20 | 4.00 | 3.60 | 4.25 | 2.60 | 4.00 | 2.17 | 3.00 | 2.00 | 1.50 | 1.00 | 1.20 | 1.00 | 1.00 | 1.75 | 1.67 | 1.50 | 0.25 | 1.00 | 1.14 | 1.50 | 0.00 | 2.13 | 75.65 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.20 | 0.80 | 0.20 | 0.00 | 0.40 | 0.17 | 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 | 0.00 | 0.00 | 0.00 | 0.07 | 2.54 |
| 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 | 12.20 | 14.33 | 10.33 | 3.80 | 17.25 | 41.00 | 40.80 | 41.40 | 58.00 | 77.60 | 64.17 | 53.80 | 44.25 | 36.00 | 46.67 | 30.67 | 41.67 | 33.20 | 30.00 | 18.80 | 25.40 | 31.67 | 15.80 | 16.25 | 21.33 | 9.50 | 2.00 | 2.00 | 3.86 | 3.00 | 1.00 | 27.35 | 100 |
| CVn | 12.00 | 14.33 | 10.00 | 1.60 | 0.50 | 0.60 | 0.00 | 7.60 | 34.25 | 33.00 | 30.67 | 31.00 | 20.00 | 10.80 | 14.67 | 12.17 | 11.67 | 4.00 | 4.67 | 0.20 | 0.60 | 0.00 | 1.20 | 8.00 | 11.00 | 4.25 | 1.50 | 2.00 | 3.86 | 3.00 | 1.00 | 9.36 | 34.22 |
| CVs | 0.20 | 0.00 | 0.33 | 2.20 | 16.75 | 40.40 | 40.80 | 33.80 | 23.75 | 44.60 | 33.50 | 22.80 | 24.25 | 25.20 | 32.00 | 18.50 | 30.00 | 29.20 | 25.33 | 18.60 | 24.80 | 31.67 | 14.60 | 8.25 | 10.33 | 5.25 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 17.99 | 65.78 |
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