Statistics of sunspot activity
May, 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 | 123.80 | 137.00 | 104.20 | 91.25 | 100.63 | 96.00 | 114.20 | 117.86 | 132.83 | 160.17 | 157.80 | 130.20 | 146.40 | 144.50 | 131.20 | 116.50 | 128.83 | 116.67 | 105.40 | 127.60 | 123.43 | 122.00 | 139.67 | 150.00 | 123.75 | 135.50 | 113.00 | 114.60 | 112.20 | 80.60 | 89.50 | 122.17 | 100 |
| Wn | 27.40 | 23.17 | 16.00 | 13.50 | 17.25 | 14.60 | 13.80 | 19.14 | 16.33 | 4.83 | 7.40 | 15.00 | 20.60 | 27.00 | 30.00 | 24.33 | 34.67 | 38.00 | 45.00 | 62.60 | 64.29 | 64.75 | 65.33 | 63.20 | 33.75 | 37.00 | 25.40 | 23.20 | 18.20 | 2.20 | 0.00 | 28.00 | 22.92 |
| Ws | 96.40 | 113.83 | 88.20 | 77.75 | 83.38 | 81.40 | 100.40 | 98.71 | 116.50 | 155.33 | 150.40 | 115.20 | 125.80 | 117.50 | 101.20 | 92.17 | 94.17 | 78.67 | 60.40 | 65.00 | 59.14 | 57.25 | 74.33 | 86.80 | 90.00 | 98.50 | 87.60 | 91.40 | 94.00 | 78.40 | 89.50 | 94.17 | 77.08 |
| n | 7.00 | 7.00 | 5.60 | 5.00 | 5.88 | 5.00 | 5.80 | 6.00 | 6.33 | 5.50 | 5.40 | 5.00 | 5.20 | 6.67 | 7.20 | 6.33 | 8.17 | 8.33 | 6.40 | 6.80 | 5.14 | 5.50 | 7.00 | 8.40 | 7.25 | 9.50 | 7.80 | 6.80 | 6.40 | 4.40 | 3.83 | 6.34 | 100 |
| A | 1.00 | 1.67 | 0.60 | 0.00 | 0.38 | 0.60 | 0.40 | 0.14 | 0.33 | 0.33 | 0.40 | 0.20 | 0.40 | 0.83 | 0.60 | 0.00 | 0.17 | 0.50 | 0.60 | 1.20 | 0.00 | 0.00 | 1.00 | 1.40 | 1.75 | 3.67 | 2.60 | 2.20 | 1.20 | 1.00 | 0.33 | 0.82 | 12.97 |
| B | 1.00 | 0.50 | 0.80 | 0.00 | 1.13 | 0.40 | 1.20 | 0.00 | 0.17 | 0.33 | 0.60 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.83 | 0.20 | 0.20 | 0.14 | 0.25 | 1.00 | 1.20 | 1.25 | 1.50 | 1.20 | 0.20 | 0.80 | 0.00 | 0.17 | 0.51 | 8.04 |
| C | 1.00 | 1.00 | 2.00 | 1.50 | 2.00 | 1.20 | 1.20 | 2.29 | 1.17 | 1.17 | 1.00 | 1.00 | 0.60 | 0.50 | 2.00 | 2.50 | 1.67 | 1.83 | 2.40 | 1.40 | 1.00 | 1.00 | 1.33 | 1.80 | 1.75 | 1.50 | 0.40 | 1.00 | 1.20 | 0.00 | 0.83 | 1.33 | 20.97 |
| D | 1.00 | 2.00 | 1.60 | 2.00 | 0.63 | 1.60 | 1.80 | 2.43 | 4.17 | 2.33 | 1.20 | 1.40 | 1.40 | 1.83 | 2.20 | 1.67 | 2.00 | 2.00 | 1.80 | 1.80 | 1.29 | 2.75 | 1.50 | 1.80 | 1.75 | 1.00 | 1.40 | 1.40 | 0.60 | 1.20 | 1.17 | 1.70 | 26.80 |
| E | 0.40 | 0.17 | 0.00 | 0.25 | 0.00 | 0.20 | 0.20 | 0.00 | 0.00 | 1.00 | 1.80 | 1.20 | 0.40 | 0.17 | 0.80 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.71 | 0.25 | 0.83 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.20 | 1.00 | 0.35 | 5.48 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 1.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 1.22 |
| G | 1.60 | 1.33 | 0.60 | 0.25 | 0.75 | 0.40 | 0.80 | 1.00 | 0.50 | 0.17 | 0.00 | 0.40 | 1.40 | 1.83 | 1.00 | 1.50 | 1.00 | 0.67 | 0.00 | 0.40 | 1.14 | 0.25 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.17 | 0.58 | 9.13 |
| H | 0.00 | 0.00 | 0.00 | 0.75 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.83 | 0.33 | 0.00 | 0.60 | 0.00 | 0.00 | 0.33 | 0.60 | 0.00 | 0.17 | 0.60 | 0.60 | 1.20 | 0.00 | 0.00 | 0.22 | 3.54 |
| I | 1.00 | 0.33 | 0.00 | 0.25 | 0.25 | 0.60 | 0.20 | 0.14 | 0.00 | 0.17 | 0.40 | 0.00 | 0.00 | 0.50 | 0.40 | 0.67 | 2.17 | 2.17 | 1.40 | 0.80 | 0.86 | 1.00 | 1.00 | 1.00 | 0.75 | 1.67 | 1.60 | 1.40 | 1.00 | 1.40 | 0.17 | 0.75 | 11.84 |
| x | 2.00 | 2.17 | 1.40 | 0.00 | 1.50 | 1.00 | 1.60 | 0.14 | 0.50 | 0.67 | 1.00 | 0.60 | 0.40 | 0.83 | 0.60 | 0.00 | 0.50 | 1.33 | 0.80 | 1.40 | 0.14 | 0.25 | 2.00 | 2.60 | 3.00 | 5.17 | 3.80 | 2.40 | 2.00 | 1.00 | 0.50 | 1.33 | 21.00 |
| r | 1.40 | 0.83 | 0.20 | 0.50 | 0.38 | 0.00 | 0.20 | 1.29 | 0.50 | 0.83 | 0.60 | 0.40 | 0.00 | 0.17 | 0.00 | 0.33 | 0.67 | 0.17 | 0.80 | 0.20 | 0.00 | 0.00 | 0.17 | 0.80 | 0.75 | 0.50 | 0.20 | 0.00 | 0.00 | 0.20 | 0.00 | 0.39 | 6.14 |
| s | 1.00 | 2.00 | 1.60 | 0.25 | 1.50 | 2.40 | 1.40 | 1.86 | 2.33 | 0.50 | 0.60 | 0.40 | 1.80 | 3.50 | 4.60 | 3.00 | 2.33 | 3.00 | 2.20 | 2.20 | 2.43 | 3.00 | 2.67 | 1.60 | 1.75 | 2.00 | 1.60 | 1.60 | 0.80 | 1.40 | 1.00 | 1.88 | 29.66 |
| a | 0.40 | 1.00 | 0.60 | 1.75 | 1.38 | 1.00 | 2.00 | 1.14 | 2.00 | 2.00 | 1.20 | 1.40 | 1.20 | 0.67 | 0.60 | 1.50 | 3.17 | 2.17 | 2.00 | 1.00 | 1.57 | 1.25 | 0.83 | 1.20 | 0.50 | 1.00 | 1.40 | 2.20 | 2.20 | 0.60 | 0.67 | 1.34 | 21.15 |
| h | 1.60 | 0.17 | 0.20 | 0.50 | 0.38 | 0.20 | 0.00 | 0.57 | 0.00 | 0.00 | 0.00 | 0.40 | 0.60 | 0.33 | 0.80 | 0.33 | 0.83 | 0.17 | 0.00 | 0.20 | 0.57 | 0.50 | 0.83 | 1.20 | 0.75 | 0.83 | 0.60 | 0.40 | 1.20 | 0.60 | 0.17 | 0.48 | 7.60 |
| k | 0.60 | 0.83 | 1.60 | 2.00 | 0.75 | 0.40 | 0.60 | 1.00 | 1.00 | 1.50 | 2.00 | 1.80 | 1.20 | 1.17 | 0.60 | 1.17 | 0.67 | 1.50 | 0.60 | 1.80 | 0.43 | 0.50 | 0.50 | 1.00 | 0.50 | 0.00 | 0.20 | 0.20 | 0.20 | 0.60 | 1.50 | 0.92 | 14.45 |
| x | 2.00 | 2.00 | 0.60 | 1.00 | 1.38 | 1.20 | 0.60 | 0.29 | 0.33 | 0.50 | 0.80 | 0.20 | 0.40 | 1.33 | 1.20 | 0.67 | 3.17 | 3.00 | 2.00 | 2.60 | 0.86 | 1.00 | 2.33 | 3.00 | 2.50 | 5.50 | 4.80 | 4.20 | 3.40 | 2.40 | 0.50 | 1.80 | 28.35 |
| o | 4.20 | 4.00 | 4.20 | 3.75 | 4.50 | 3.00 | 5.00 | 4.86 | 4.50 | 2.83 | 2.00 | 2.40 | 3.40 | 3.83 | 4.60 | 5.67 | 5.00 | 5.33 | 3.40 | 3.20 | 3.29 | 3.50 | 3.50 | 5.00 | 4.50 | 3.33 | 2.40 | 2.00 | 2.00 | 1.20 | 1.33 | 3.60 | 56.82 |
| i | 0.80 | 1.00 | 0.80 | 0.25 | 0.00 | 0.80 | 0.00 | 0.86 | 1.50 | 2.00 | 2.40 | 1.80 | 1.40 | 1.50 | 1.40 | 0.00 | 0.00 | 0.00 | 0.60 | 0.80 | 1.00 | 1.00 | 1.17 | 0.40 | 0.25 | 0.67 | 0.60 | 0.60 | 1.00 | 0.80 | 1.50 | 0.87 | 13.68 |
| c | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 0.00 | 0.17 | 0.20 | 0.60 | 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 | 0.50 | 0.07 | 1.15 |
| CV | 141.40 | 115.67 | 118.00 | 136.00 | 90.00 | 86.20 | 91.00 | 129.00 | 136.83 | 122.17 | 129.40 | 143.80 | 148.80 | 164.67 | 164.00 | 139.17 | 144.17 | 144.33 | 90.20 | 137.60 | 115.29 | 120.50 | 120.33 | 142.80 | 99.50 | 85.00 | 82.00 | 77.00 | 98.20 | 89.20 | 108.50 | 119.70 | 100 |
| CVn | 11.60 | 11.00 | 2.60 | 8.50 | 5.00 | 5.40 | 3.60 | 20.14 | 19.00 | 4.00 | 5.60 | 18.60 | 16.80 | 24.00 | 25.80 | 28.33 | 36.67 | 57.50 | 42.40 | 64.60 | 68.00 | 71.25 | 62.67 | 61.40 | 45.00 | 39.00 | 37.20 | 29.60 | 34.60 | 0.20 | 0.00 | 27.74 | 23.18 |
| CVs | 129.80 | 104.67 | 115.40 | 127.50 | 85.00 | 80.80 | 87.40 | 108.86 | 117.83 | 118.17 | 123.80 | 125.20 | 132.00 | 140.67 | 138.20 | 110.83 | 107.50 | 86.83 | 47.80 | 73.00 | 47.29 | 49.25 | 57.67 | 81.40 | 54.50 | 46.00 | 44.80 | 47.40 | 63.60 | 89.00 | 108.50 | 91.96 | 76.82 |
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