Statistics of sunspot activity
June, 1999
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 | 133.00 | 146.75 | 129.00 | 142.25 | 197.00 | 218.25 | 183.75 | 189.00 | 202.67 | 206.00 | 208.00 | 213.50 | 205.67 | 207.75 | 202.50 | 177.50 | 136.00 | 103.00 | 116.67 | 83.75 | 121.25 | 150.33 | 180.33 | 235.67 | 259.50 | 278.33 | 312.67 | 261.33 | 270.00 | 226.33 | 189.93 | 100 |
| Wn | 43.33 | 51.75 | 52.00 | 59.50 | 89.33 | 105.25 | 85.75 | 102.67 | 120.67 | 137.50 | 140.00 | 135.00 | 117.67 | 119.50 | 104.25 | 92.25 | 66.33 | 63.00 | 78.67 | 67.00 | 107.25 | 132.00 | 137.00 | 171.33 | 188.50 | 219.67 | 226.00 | 169.00 | 157.00 | 112.00 | 115.04 | 60.57 |
| Ws | 89.67 | 95.00 | 77.00 | 82.75 | 107.67 | 113.00 | 98.00 | 86.33 | 82.00 | 68.50 | 68.00 | 78.50 | 88.00 | 88.25 | 98.25 | 85.25 | 69.67 | 40.00 | 38.00 | 16.75 | 14.00 | 18.33 | 43.33 | 64.33 | 71.00 | 58.67 | 86.67 | 92.33 | 113.00 | 114.33 | 74.89 | 39.43 |
| n | 6.67 | 7.25 | 6.75 | 8.00 | 12.00 | 12.50 | 10.75 | 11.00 | 12.00 | 11.50 | 11.67 | 10.50 | 11.00 | 10.75 | 11.50 | 11.00 | 8.00 | 6.50 | 8.00 | 6.25 | 8.75 | 10.00 | 12.00 | 13.67 | 13.50 | 12.33 | 11.33 | 10.00 | 10.00 | 10.33 | 10.18 | 100 |
| A | 0.33 | 0.25 | 0.50 | 0.75 | 2.67 | 2.00 | 0.75 | 0.67 | 2.00 | 2.25 | 0.67 | 0.25 | 0.00 | 0.75 | 2.50 | 2.75 | 1.00 | 1.00 | 1.00 | 1.00 | 0.75 | 0.67 | 0.33 | 2.00 | 1.50 | 1.67 | 1.33 | 0.67 | 0.00 | 0.33 | 1.08 | 10.58 |
| B | 1.00 | 2.00 | 0.75 | 1.00 | 1.67 | 2.50 | 2.25 | 3.67 | 1.67 | 2.25 | 3.00 | 1.25 | 0.67 | 0.25 | 0.00 | 1.75 | 1.33 | 0.50 | 1.33 | 0.75 | 1.00 | 1.00 | 2.00 | 1.00 | 2.50 | 1.00 | 1.33 | 0.00 | 1.33 | 1.00 | 1.39 | 13.67 |
| C | 2.00 | 2.00 | 1.25 | 1.25 | 3.00 | 3.00 | 3.00 | 1.00 | 2.00 | 1.50 | 1.67 | 2.75 | 3.67 | 2.25 | 1.00 | 1.00 | 3.33 | 2.75 | 1.67 | 1.00 | 1.50 | 3.67 | 4.67 | 3.00 | 3.00 | 2.33 | 1.33 | 1.67 | 1.33 | 2.00 | 2.19 | 21.47 |
| D | 2.67 | 2.00 | 2.00 | 2.00 | 2.33 | 2.25 | 2.50 | 2.00 | 2.67 | 1.00 | 1.00 | 3.00 | 4.33 | 3.75 | 4.00 | 3.50 | 1.33 | 1.00 | 1.33 | 1.50 | 3.25 | 3.00 | 0.67 | 3.00 | 1.50 | 3.00 | 2.33 | 4.33 | 3.67 | 3.00 | 2.46 | 24.20 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 1.33 | 1.00 | 1.50 | 0.33 | 0.00 | 0.67 | 0.50 | 1.00 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.33 | 0.00 | 1.00 | 1.33 | 1.67 | 0.44 | 4.28 |
| F | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 0.75 | 0.33 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.33 | 0.33 | 1.00 | 1.50 | 1.67 | 2.00 | 1.00 | 0.67 | 0.33 | 0.39 | 3.87 |
| G | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.50 | 1.00 | 0.67 | 0.50 | 1.00 | 1.25 | 0.00 | 0.50 | 0.50 | 0.25 | 0.33 | 0.25 | 0.67 | 0.25 | 0.25 | 0.67 | 1.33 | 1.67 | 0.50 | 0.67 | 0.67 | 0.00 | 0.33 | 0.67 | 0.51 | 4.96 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.75 | 1.00 | 0.50 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.50 | 0.33 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.15 | 1.47 |
| I | 0.67 | 1.00 | 2.25 | 3.00 | 2.33 | 1.75 | 1.25 | 1.33 | 1.67 | 1.75 | 2.33 | 0.75 | 1.00 | 2.00 | 2.50 | 0.75 | 0.33 | 0.50 | 1.67 | 1.00 | 1.50 | 0.67 | 2.33 | 2.00 | 3.00 | 1.67 | 2.33 | 1.33 | 1.33 | 1.33 | 1.58 | 15.49 |
| x | 1.33 | 2.25 | 1.25 | 1.75 | 4.33 | 4.50 | 3.00 | 4.33 | 3.67 | 4.50 | 3.67 | 1.50 | 0.67 | 1.00 | 2.50 | 4.50 | 2.33 | 1.50 | 2.33 | 1.75 | 1.75 | 1.67 | 2.33 | 3.00 | 4.00 | 2.67 | 2.67 | 0.67 | 1.33 | 1.33 | 2.47 | 24.25 |
| r | 1.00 | 0.50 | 0.50 | 0.75 | 1.67 | 1.25 | 0.75 | 0.00 | 1.33 | 0.25 | 0.67 | 1.50 | 0.67 | 0.25 | 0.25 | 0.00 | 0.00 | 0.50 | 0.67 | 0.00 | 0.00 | 0.00 | 1.33 | 1.33 | 1.00 | 0.67 | 0.00 | 0.33 | 0.33 | 0.00 | 0.58 | 5.73 |
| s | 2.33 | 2.25 | 2.50 | 2.50 | 3.00 | 3.00 | 2.75 | 2.67 | 2.67 | 2.75 | 4.67 | 4.75 | 2.33 | 2.00 | 3.50 | 3.00 | 2.67 | 1.75 | 4.00 | 1.75 | 3.00 | 3.33 | 3.33 | 3.67 | 1.50 | 1.67 | 2.00 | 2.67 | 3.33 | 3.67 | 2.83 | 27.82 |
| a | 1.33 | 1.00 | 1.00 | 1.50 | 2.00 | 3.00 | 4.00 | 3.33 | 3.33 | 2.50 | 1.67 | 1.25 | 5.67 | 6.25 | 5.00 | 3.25 | 2.67 | 2.25 | 0.67 | 2.25 | 3.75 | 5.00 | 5.00 | 5.67 | 6.00 | 6.67 | 4.67 | 5.67 | 4.33 | 4.33 | 3.50 | 34.37 |
| h | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.25 | 0.33 | 0.50 | 0.33 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.82 |
| k | 0.67 | 1.00 | 1.25 | 1.50 | 1.00 | 0.75 | 0.25 | 0.33 | 1.00 | 1.25 | 0.67 | 1.00 | 1.33 | 1.00 | 0.25 | 0.25 | 0.33 | 0.50 | 0.33 | 0.50 | 0.25 | 0.00 | 0.00 | 0.00 | 1.00 | 0.67 | 2.00 | 0.67 | 0.67 | 1.00 | 0.71 | 7.01 |
| x | 1.00 | 1.25 | 2.75 | 3.75 | 5.00 | 3.75 | 2.00 | 2.00 | 4.00 | 4.75 | 4.00 | 1.50 | 1.33 | 3.00 | 5.00 | 3.50 | 1.33 | 2.00 | 3.00 | 2.25 | 2.50 | 1.33 | 2.67 | 4.00 | 4.50 | 3.33 | 3.67 | 2.00 | 1.33 | 1.67 | 2.81 | 27.55 |
| o | 4.33 | 4.75 | 2.25 | 2.50 | 5.67 | 8.25 | 8.25 | 7.67 | 6.67 | 5.25 | 6.67 | 8.25 | 7.33 | 4.75 | 4.50 | 6.25 | 6.33 | 4.50 | 5.00 | 3.50 | 5.75 | 8.00 | 8.33 | 7.33 | 7.50 | 5.33 | 4.33 | 5.67 | 6.00 | 6.33 | 5.91 | 58.02 |
| i | 1.33 | 0.75 | 1.00 | 1.50 | 1.33 | 0.50 | 0.25 | 1.33 | 1.00 | 1.50 | 0.33 | 0.50 | 1.67 | 2.00 | 1.25 | 1.25 | 0.33 | 0.00 | 0.00 | 0.25 | 0.25 | 0.33 | 0.67 | 1.67 | 0.50 | 2.00 | 2.67 | 1.67 | 2.33 | 2.00 | 1.07 | 10.53 |
| c | 0.00 | 0.50 | 0.75 | 0.25 | 0.00 | 0.00 | 0.25 | 0.00 | 0.33 | 0.00 | 0.67 | 0.25 | 0.67 | 1.00 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.33 | 0.33 | 0.67 | 1.00 | 1.67 | 0.67 | 0.67 | 0.33 | 0.33 | 0.40 | 3.90 |
| CV | 98.67 | 111.00 | 122.00 | 120.50 | 126.67 | 133.00 | 124.25 | 143.00 | 160.33 | 151.50 | 159.00 | 194.50 | 205.67 | 193.75 | 169.50 | 138.75 | 94.33 | 73.75 | 93.67 | 88.75 | 123.75 | 132.33 | 123.33 | 175.67 | 162.50 | 190.00 | 203.67 | 182.67 | 179.67 | 187.67 | 145.46 | 100 |
| CVn | 48.00 | 57.75 | 61.25 | 54.00 | 52.67 | 62.25 | 57.50 | 74.33 | 95.00 | 87.50 | 88.67 | 106.00 | 105.33 | 123.25 | 94.50 | 63.50 | 43.00 | 36.00 | 67.33 | 71.25 | 115.00 | 108.67 | 96.67 | 138.00 | 114.50 | 146.67 | 150.67 | 114.00 | 109.33 | 114.67 | 88.58 | 60.89 |
| CVs | 50.67 | 53.25 | 60.75 | 66.50 | 74.00 | 70.75 | 66.75 | 68.67 | 65.33 | 64.00 | 70.33 | 88.50 | 100.33 | 70.50 | 75.00 | 75.25 | 51.33 | 37.75 | 26.33 | 17.50 | 8.75 | 23.67 | 26.67 | 37.67 | 48.00 | 43.33 | 53.00 | 68.67 | 70.33 | 73.00 | 56.89 | 39.11 |
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