Statistics of sunspot activity
May, 2000
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 | 112.00 | 105.50 | 105.50 | 78.40 | 98.50 | 83.25 | 106.67 | 96.00 | 115.25 | 159.50 | 192.00 | 195.50 | 188.00 | 239.75 | 292.67 | 267.00 | 282.75 | 271.00 | 201.00 | 257.50 | 257.00 | 191.25 | 163.00 | 173.25 | 127.00 | 145.00 | 138.60 | 170.75 | 166.00 | 138.25 | 95.00 | 168.16 | 100 |
| Wn | 33.75 | 35.75 | 30.50 | 21.80 | 36.25 | 17.75 | 61.00 | 70.75 | 79.25 | 113.25 | 124.25 | 121.75 | 115.40 | 124.00 | 136.33 | 116.33 | 120.00 | 114.00 | 98.25 | 131.50 | 144.50 | 106.50 | 96.00 | 111.50 | 87.00 | 83.50 | 64.80 | 73.00 | 56.50 | 35.25 | 14.25 | 83.05 | 49.39 |
| Ws | 78.25 | 69.75 | 75.00 | 56.60 | 62.25 | 65.50 | 45.67 | 25.25 | 36.00 | 46.25 | 67.75 | 73.75 | 72.60 | 115.75 | 156.33 | 150.67 | 162.75 | 157.00 | 102.75 | 126.00 | 112.50 | 84.75 | 67.00 | 61.75 | 40.00 | 61.50 | 73.80 | 97.75 | 109.50 | 103.00 | 80.75 | 85.10 | 50.61 |
| n | 7.00 | 7.00 | 7.25 | 5.20 | 7.50 | 6.00 | 7.33 | 6.00 | 6.75 | 9.00 | 10.50 | 9.50 | 8.60 | 11.00 | 13.67 | 12.00 | 12.75 | 9.33 | 6.75 | 9.50 | 8.50 | 8.50 | 8.50 | 10.25 | 7.75 | 8.25 | 7.60 | 9.75 | 9.75 | 8.00 | 5.00 | 8.53 | 100 |
| A | 0.00 | 0.50 | 0.50 | 0.80 | 1.00 | 1.25 | 2.33 | 1.25 | 0.75 | 1.00 | 1.50 | 1.25 | 0.80 | 0.50 | 1.67 | 1.33 | 3.75 | 0.67 | 0.00 | 0.25 | 0.25 | 0.25 | 1.50 | 1.75 | 1.00 | 1.25 | 1.00 | 2.50 | 1.50 | 1.25 | 0.75 | 1.10 | 12.89 |
| B | 0.00 | 0.75 | 2.00 | 1.60 | 3.00 | 2.00 | 2.67 | 2.50 | 1.50 | 1.00 | 2.00 | 0.75 | 1.20 | 1.50 | 2.33 | 2.33 | 2.75 | 1.67 | 0.50 | 2.00 | 0.50 | 1.00 | 0.00 | 0.75 | 0.50 | 1.50 | 1.20 | 1.50 | 1.25 | 2.00 | 0.75 | 1.45 | 17.01 |
| C | 3.75 | 2.50 | 1.75 | 1.00 | 3.00 | 2.50 | 2.33 | 0.50 | 2.75 | 3.00 | 0.75 | 1.50 | 2.00 | 2.50 | 1.67 | 2.00 | 2.25 | 1.00 | 0.25 | 1.00 | 2.00 | 2.25 | 1.75 | 1.25 | 1.00 | 1.50 | 1.60 | 2.50 | 3.75 | 2.25 | 1.25 | 1.91 | 22.35 |
| D | 1.25 | 1.25 | 0.50 | 0.80 | 0.00 | 0.00 | 0.00 | 1.75 | 1.00 | 2.75 | 4.00 | 3.00 | 1.60 | 2.25 | 4.00 | 2.33 | 1.00 | 1.67 | 1.50 | 1.50 | 1.50 | 1.75 | 2.25 | 2.75 | 1.25 | 1.25 | 2.20 | 1.75 | 1.75 | 1.50 | 1.25 | 1.66 | 19.42 |
| E | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 1.00 | 1.00 | 1.67 | 1.67 | 2.25 | 1.67 | 1.25 | 1.75 | 1.50 | 1.50 | 0.50 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.54 | 6.33 |
| 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 | 0.50 | 1.00 | 0.67 | 0.50 | 0.67 | 1.00 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.00 | 0.20 | 2.30 |
| G | 1.00 | 1.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.75 | 1.20 | 1.75 | 0.67 | 1.67 | 0.25 | 0.33 | 1.00 | 0.25 | 0.75 | 0.75 | 1.00 | 1.25 | 2.25 | 2.25 | 1.60 | 1.25 | 1.25 | 1.00 | 0.75 | 0.80 | 9.35 |
| H | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.75 | 0.50 | 0.25 | 0.75 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.15 | 1.70 |
| I | 1.00 | 1.00 | 1.75 | 1.00 | 0.50 | 0.25 | 0.00 | 0.00 | 0.75 | 1.25 | 1.75 | 1.75 | 0.80 | 0.50 | 0.67 | 0.00 | 0.00 | 1.67 | 1.00 | 1.50 | 0.75 | 0.50 | 1.25 | 1.75 | 1.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.74 | 8.65 |
| x | 0.00 | 1.25 | 2.50 | 2.40 | 4.00 | 3.25 | 5.00 | 3.75 | 2.25 | 2.00 | 3.50 | 2.00 | 2.00 | 2.00 | 4.00 | 3.67 | 6.50 | 2.33 | 0.50 | 2.25 | 0.75 | 1.25 | 1.50 | 2.50 | 1.50 | 2.75 | 2.20 | 4.00 | 2.75 | 3.25 | 1.50 | 2.55 | 29.91 |
| r | 0.50 | 0.50 | 0.50 | 0.40 | 0.50 | 1.00 | 1.00 | 0.50 | 0.25 | 1.00 | 0.25 | 0.00 | 0.20 | 0.75 | 0.67 | 0.33 | 0.75 | 0.67 | 0.25 | 0.00 | 0.75 | 0.25 | 0.25 | 0.50 | 0.50 | 0.75 | 0.60 | 0.75 | 1.00 | 1.25 | 0.75 | 0.56 | 6.57 |
| s | 3.00 | 2.25 | 2.25 | 1.40 | 3.00 | 1.75 | 1.33 | 0.50 | 2.50 | 3.25 | 2.75 | 3.00 | 2.00 | 2.00 | 4.33 | 2.00 | 2.00 | 3.00 | 1.00 | 1.50 | 1.25 | 2.00 | 1.75 | 2.00 | 1.75 | 1.75 | 2.80 | 1.75 | 4.00 | 1.75 | 1.50 | 2.17 | 25.38 |
| a | 1.75 | 1.75 | 0.75 | 1.00 | 0.00 | 0.00 | 0.00 | 1.25 | 1.50 | 2.75 | 3.50 | 2.75 | 1.80 | 2.75 | 1.67 | 2.67 | 0.75 | 0.33 | 1.75 | 2.00 | 2.25 | 2.00 | 2.75 | 3.00 | 2.00 | 1.25 | 1.00 | 2.25 | 1.00 | 0.75 | 0.25 | 1.59 | 18.61 |
| h | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.25 | 0.00 | 0.50 | 0.67 | 0.67 | 0.75 | 0.33 | 0.75 | 0.50 | 0.00 | 0.50 | 1.00 | 1.50 | 1.00 | 0.75 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.33 | 3.84 |
| k | 1.75 | 1.25 | 0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.25 | 1.50 | 2.60 | 3.00 | 2.33 | 2.67 | 2.00 | 2.67 | 2.50 | 3.25 | 3.50 | 2.50 | 1.25 | 0.75 | 1.00 | 1.00 | 1.00 | 0.75 | 1.00 | 1.00 | 1.00 | 1.34 | 15.70 |
| x | 1.00 | 1.50 | 2.75 | 1.80 | 1.50 | 1.50 | 2.33 | 1.25 | 1.50 | 2.25 | 3.25 | 3.00 | 1.60 | 1.50 | 2.33 | 1.33 | 3.75 | 2.33 | 1.25 | 2.25 | 1.75 | 1.25 | 3.00 | 4.25 | 2.75 | 1.50 | 1.00 | 2.50 | 1.50 | 1.25 | 0.75 | 1.98 | 23.25 |
| o | 5.75 | 5.50 | 4.50 | 3.40 | 6.00 | 4.50 | 5.00 | 4.75 | 5.25 | 6.25 | 4.50 | 4.00 | 4.80 | 6.75 | 7.33 | 7.67 | 6.25 | 4.00 | 2.25 | 4.00 | 3.75 | 4.75 | 3.25 | 4.50 | 4.50 | 6.50 | 6.60 | 7.00 | 8.00 | 6.75 | 4.00 | 5.23 | 61.27 |
| i | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 1.50 | 1.50 | 1.20 | 2.00 | 3.00 | 1.33 | 1.25 | 1.00 | 0.75 | 0.75 | 0.75 | 1.25 | 1.50 | 1.25 | 0.25 | 0.25 | 0.00 | 0.25 | 0.25 | 0.00 | 0.25 | 0.67 | 7.86 |
| c | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.25 | 1.00 | 1.00 | 0.75 | 1.00 | 1.67 | 1.50 | 2.00 | 2.50 | 2.50 | 2.25 | 1.25 | 0.75 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.65 | 7.62 |
| CV | 133.25 | 109.00 | 90.75 | 38.40 | 42.00 | 29.25 | 27.33 | 43.50 | 64.25 | 97.00 | 152.75 | 180.25 | 184.40 | 247.25 | 284.00 | 264.33 | 205.25 | 220.33 | 225.00 | 244.00 | 231.75 | 207.50 | 179.75 | 187.00 | 156.00 | 148.25 | 125.40 | 121.75 | 136.25 | 101.75 | 86.75 | 147.24 | 100 |
| CVn | 57.00 | 54.50 | 46.75 | 9.80 | 16.75 | 7.25 | 14.67 | 40.50 | 52.50 | 62.25 | 91.00 | 99.75 | 99.00 | 122.00 | 129.67 | 117.67 | 96.25 | 101.33 | 127.00 | 142.75 | 138.75 | 119.75 | 103.75 | 107.75 | 94.00 | 96.75 | 51.20 | 33.00 | 38.50 | 24.25 | 11.75 | 74.45 | 50.56 |
| CVs | 76.25 | 54.50 | 44.00 | 28.60 | 25.25 | 22.00 | 12.67 | 3.00 | 11.75 | 34.75 | 61.75 | 80.50 | 85.40 | 125.25 | 154.33 | 146.67 | 109.00 | 119.00 | 98.00 | 101.25 | 93.00 | 87.75 | 76.00 | 79.25 | 62.00 | 51.50 | 74.20 | 88.75 | 97.75 | 77.50 | 75.00 | 72.79 | 49.44 |
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