Statistics of sunspot activity
January, 1984
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 | 13.50 | 24.00 | 23.67 | 20.00 | 22.50 | 27.60 | 37.00 | 42.83 | 57.83 | 53.50 | 65.25 | 65.00 | 61.20 | 61.50 | 60.00 | 53.67 | 59.25 | 58.20 | 62.71 | 98.40 | 105.86 | 73.83 | 89.67 | 102.00 | 128.33 | 137.17 | 139.00 | 138.80 | 149.83 | 156.00 | 127.40 | 74.69 | 100 |
| Wn | 13.50 | 24.00 | 21.83 | 20.00 | 13.83 | 2.60 | 2.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 4.40 | 13.71 | 23.00 | 48.33 | 81.60 | 99.67 | 107.50 | 122.00 | 138.80 | 134.00 | 141.33 | 104.00 | 36.01 | 48.21 |
| Ws | 0.00 | 0.00 | 1.83 | 0.00 | 8.67 | 25.00 | 34.83 | 42.83 | 57.83 | 53.50 | 65.25 | 65.00 | 61.20 | 61.50 | 60.00 | 53.67 | 59.25 | 58.20 | 62.71 | 94.00 | 92.14 | 50.83 | 41.33 | 20.40 | 28.67 | 29.67 | 17.00 | 0.00 | 15.83 | 14.67 | 23.40 | 38.68 | 51.79 |
| n | 1.00 | 1.17 | 1.17 | 1.00 | 1.50 | 2.20 | 2.67 | 2.50 | 3.33 | 3.33 | 4.00 | 3.60 | 3.40 | 2.50 | 2.20 | 2.33 | 3.50 | 4.00 | 4.14 | 5.80 | 5.86 | 4.50 | 5.00 | 4.80 | 6.17 | 5.83 | 5.80 | 4.60 | 5.83 | 6.33 | 6.60 | 3.76 | 100 |
| A | 0.17 | 0.00 | 0.17 | 0.00 | 0.17 | 1.00 | 0.33 | 0.00 | 0.17 | 0.50 | 0.00 | 0.00 | 0.40 | 0.00 | 0.20 | 0.00 | 0.00 | 0.40 | 0.43 | 0.20 | 0.43 | 0.50 | 0.67 | 0.80 | 1.50 | 1.00 | 1.80 | 0.60 | 0.67 | 1.67 | 1.20 | 0.48 | 12.82 |
| B | 0.67 | 0.67 | 0.17 | 0.00 | 0.17 | 0.20 | 1.17 | 0.83 | 0.50 | 0.50 | 0.75 | 0.80 | 0.60 | 0.25 | 0.00 | 0.17 | 0.25 | 0.00 | 0.14 | 0.80 | 0.57 | 0.17 | 0.33 | 0.00 | 0.67 | 0.67 | 0.40 | 0.40 | 1.17 | 1.33 | 1.00 | 0.49 | 13.14 |
| C | 0.17 | 0.33 | 0.00 | 0.00 | 0.33 | 0.00 | 0.50 | 0.83 | 1.33 | 0.83 | 1.75 | 1.20 | 0.80 | 1.00 | 0.60 | 1.17 | 0.25 | 1.00 | 1.29 | 1.80 | 2.14 | 0.67 | 1.33 | 0.80 | 0.50 | 0.17 | 1.20 | 1.60 | 1.17 | 1.00 | 0.60 | 0.85 | 22.60 |
| D | 0.00 | 0.17 | 0.83 | 0.80 | 0.50 | 0.80 | 0.17 | 0.17 | 0.17 | 0.17 | 0.75 | 0.20 | 0.00 | 0.00 | 0.40 | 0.00 | 0.50 | 0.40 | 0.29 | 1.40 | 1.14 | 1.67 | 1.50 | 2.20 | 3.33 | 3.17 | 1.40 | 1.00 | 1.00 | 1.33 | 1.20 | 0.86 | 22.84 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.50 | 1.00 | 0.80 | 1.00 | 1.00 | 1.00 | 0.21 | 5.57 |
| 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 | 0.20 | 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 | 0.01 | 0.17 |
| G | 0.00 | 0.00 | 0.00 | 0.20 | 0.17 | 0.20 | 0.50 | 0.67 | 1.00 | 0.83 | 0.75 | 0.40 | 0.60 | 1.25 | 1.00 | 1.00 | 1.00 | 1.00 | 1.14 | 1.00 | 1.00 | 0.50 | 0.67 | 0.40 | 0.17 | 0.17 | 0.00 | 0.20 | 0.33 | 0.00 | 0.00 | 0.52 | 13.84 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.07 | 1.80 |
| I | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.20 | 0.60 | 0.00 | 0.00 | 0.00 | 1.00 | 1.20 | 0.86 | 0.60 | 0.57 | 0.67 | 0.33 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.50 | 0.00 | 1.40 | 0.27 | 7.22 |
| x | 0.83 | 0.67 | 0.33 | 0.00 | 0.33 | 1.20 | 1.50 | 0.83 | 0.67 | 1.00 | 0.75 | 0.80 | 1.00 | 0.25 | 0.20 | 0.17 | 0.25 | 0.40 | 0.57 | 1.00 | 1.00 | 0.67 | 1.00 | 0.80 | 2.17 | 1.67 | 2.20 | 1.00 | 1.83 | 3.00 | 2.20 | 0.98 | 25.96 |
| r | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.33 | 0.50 | 0.50 | 0.75 | 0.60 | 0.40 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.29 | 0.40 | 0.57 | 0.17 | 0.00 | 0.00 | 0.17 | 0.17 | 0.00 | 0.40 | 0.00 | 0.33 | 0.60 | 0.22 | 5.93 |
| s | 0.00 | 0.00 | 0.50 | 1.00 | 0.17 | 0.80 | 0.83 | 1.00 | 0.67 | 0.67 | 0.50 | 0.20 | 0.60 | 0.75 | 0.60 | 0.67 | 0.75 | 1.40 | 1.43 | 3.20 | 1.29 | 1.50 | 1.33 | 0.60 | 0.67 | 1.50 | 0.60 | 0.80 | 1.00 | 1.00 | 1.20 | 0.88 | 23.33 |
| a | 0.17 | 0.17 | 0.33 | 0.00 | 1.00 | 0.20 | 0.17 | 0.33 | 0.83 | 0.50 | 1.25 | 0.40 | 0.20 | 0.25 | 0.00 | 0.67 | 0.75 | 1.20 | 1.00 | 0.80 | 2.43 | 1.17 | 1.17 | 0.60 | 0.33 | 0.17 | 0.60 | 0.40 | 0.83 | 0.00 | 0.40 | 0.59 | 15.70 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.17 | 0.00 | 0.60 | 0.20 | 0.50 | 0.60 | 0.50 | 0.50 | 0.40 | 0.14 | 0.40 | 0.14 | 0.67 | 0.67 | 0.60 | 1.17 | 0.67 | 0.60 | 0.00 | 0.50 | 0.00 | 0.20 | 0.31 | 8.33 |
| k | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.50 | 0.75 | 1.00 | 1.00 | 0.75 | 0.80 | 0.33 | 1.00 | 0.60 | 0.71 | 0.00 | 0.43 | 0.33 | 0.83 | 2.20 | 1.67 | 1.67 | 1.80 | 2.00 | 1.67 | 2.00 | 2.00 | 0.78 | 20.75 |
| x | 0.17 | 0.00 | 0.17 | 0.00 | 0.33 | 1.00 | 0.33 | 0.00 | 0.33 | 1.00 | 0.00 | 0.60 | 1.00 | 0.00 | 0.20 | 0.00 | 1.50 | 1.60 | 1.29 | 0.80 | 1.00 | 1.50 | 1.17 | 0.80 | 1.50 | 1.17 | 1.80 | 0.60 | 1.17 | 1.67 | 2.80 | 0.82 | 21.84 |
| o | 0.83 | 1.17 | 0.83 | 1.00 | 1.17 | 1.20 | 2.33 | 2.50 | 3.00 | 2.33 | 4.00 | 2.60 | 2.00 | 2.50 | 2.00 | 2.33 | 2.00 | 2.40 | 2.86 | 5.00 | 4.43 | 2.67 | 3.33 | 2.00 | 2.33 | 3.00 | 2.00 | 2.40 | 3.17 | 2.67 | 1.80 | 2.38 | 63.30 |
| i | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.43 | 0.33 | 0.50 | 1.20 | 2.33 | 1.67 | 1.40 | 1.60 | 1.00 | 1.00 | 1.20 | 0.44 | 11.68 |
| 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 | 0.80 | 0.00 | 0.00 | 0.60 | 0.00 | 0.50 | 1.00 | 0.80 | 0.12 | 3.17 |
| CV | 2.83 | 6.17 | 19.83 | 25.20 | 18.17 | 25.40 | 23.33 | 28.33 | 59.67 | 54.50 | 68.00 | 80.80 | 66.00 | 70.75 | 72.20 | 55.67 | 86.25 | 76.40 | 70.43 | 93.00 | 83.71 | 89.83 | 109.00 | 159.20 | 159.17 | 151.33 | 134.00 | 107.20 | 129.00 | 121.67 | 131.60 | 76.73 | 100 |
| CVn | 2.83 | 6.17 | 19.67 | 25.20 | 15.17 | 5.00 | 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 | 3.40 | 8.86 | 34.17 | 83.33 | 136.00 | 142.00 | 124.00 | 124.40 | 107.20 | 125.00 | 120.33 | 122.40 | 38.88 | 50.67 |
| CVs | 0.00 | 0.00 | 0.17 | 0.00 | 3.00 | 20.40 | 23.17 | 28.33 | 59.67 | 54.50 | 68.00 | 80.80 | 66.00 | 70.75 | 72.20 | 55.67 | 86.25 | 76.40 | 70.43 | 89.60 | 74.86 | 55.67 | 25.67 | 23.20 | 17.17 | 27.33 | 9.60 | 0.00 | 4.00 | 1.33 | 9.20 | 37.85 | 49.33 |
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