Statistics of sunspot activity
May, 1989
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 | 129.00 | 121.17 | 113.17 | 134.86 | 125.20 | 141.60 | 195.57 | 225.33 | 196.20 | 164.67 | 143.29 | 143.80 | 126.50 | 172.20 | 194.40 | 211.67 | 214.43 | 240.43 | 246.86 | 265.71 | 216.29 | 200.29 | 236.00 | 223.14 | 251.29 | 199.43 | 225.00 | 184.00 | 166.00 | 180.00 | 151.50 | 185.13 | 100 |
| Wn | 65.50 | 64.50 | 54.00 | 60.71 | 52.60 | 64.60 | 102.00 | 125.50 | 117.80 | 95.17 | 78.29 | 80.80 | 71.83 | 103.20 | 129.40 | 127.00 | 138.43 | 142.71 | 149.14 | 159.71 | 117.57 | 90.29 | 85.00 | 84.29 | 77.57 | 46.57 | 57.80 | 41.14 | 49.67 | 64.60 | 56.25 | 88.83 | 47.98 |
| Ws | 63.50 | 56.67 | 59.17 | 74.14 | 72.60 | 77.00 | 93.57 | 99.83 | 78.40 | 69.50 | 65.00 | 63.00 | 54.67 | 69.00 | 65.00 | 84.67 | 76.00 | 97.71 | 97.71 | 106.00 | 98.71 | 110.00 | 151.00 | 138.86 | 173.71 | 152.86 | 167.20 | 142.86 | 116.33 | 115.40 | 95.25 | 96.30 | 52.02 |
| n | 7.17 | 6.00 | 4.83 | 4.43 | 4.60 | 6.40 | 10.29 | 11.17 | 9.40 | 9.50 | 8.86 | 9.20 | 7.17 | 8.60 | 10.80 | 12.67 | 12.71 | 13.00 | 14.00 | 13.43 | 9.57 | 8.86 | 10.14 | 11.86 | 13.14 | 10.29 | 12.60 | 11.14 | 9.83 | 10.40 | 8.50 | 9.70 | 100 |
| A | 1.67 | 0.83 | 0.67 | 0.29 | 0.40 | 0.80 | 0.57 | 1.00 | 0.20 | 1.50 | 1.43 | 1.00 | 0.50 | 0.40 | 1.60 | 0.50 | 0.57 | 0.14 | 0.57 | 2.29 | 1.57 | 1.00 | 0.57 | 1.14 | 2.00 | 1.43 | 2.60 | 3.14 | 1.33 | 2.20 | 1.00 | 1.13 | 11.62 |
| B | 1.83 | 1.50 | 0.17 | 0.86 | 0.80 | 0.60 | 1.00 | 1.33 | 1.20 | 1.17 | 1.29 | 1.60 | 0.17 | 0.60 | 0.80 | 2.00 | 2.71 | 1.71 | 2.29 | 1.57 | 1.00 | 0.86 | 1.29 | 1.57 | 1.57 | 0.86 | 2.40 | 1.86 | 2.83 | 2.00 | 0.25 | 1.34 | 13.87 |
| C | 0.67 | 1.67 | 1.00 | 0.86 | 1.00 | 1.40 | 3.29 | 3.50 | 4.20 | 2.83 | 2.43 | 2.60 | 3.17 | 3.00 | 1.00 | 2.50 | 2.71 | 3.00 | 4.00 | 3.71 | 1.71 | 1.00 | 2.71 | 3.71 | 3.43 | 1.71 | 2.00 | 1.43 | 1.67 | 2.80 | 3.50 | 2.39 | 24.69 |
| D | 1.00 | 0.33 | 1.00 | 0.14 | 0.20 | 2.60 | 3.57 | 3.33 | 2.80 | 2.17 | 0.71 | 0.60 | 1.17 | 1.40 | 3.60 | 3.17 | 2.00 | 2.43 | 2.57 | 2.43 | 1.43 | 0.57 | 0.57 | 1.00 | 1.57 | 1.86 | 1.60 | 2.43 | 1.67 | 2.60 | 2.50 | 1.77 | 18.31 |
| E | 0.17 | 1.17 | 1.50 | 1.86 | 1.20 | 1.00 | 0.86 | 0.50 | 0.40 | 0.67 | 0.86 | 1.00 | 0.17 | 0.00 | 0.40 | 0.33 | 0.71 | 0.71 | 0.43 | 1.43 | 1.43 | 2.00 | 1.43 | 0.00 | 0.00 | 0.00 | 0.00 | 0.57 | 0.67 | 0.40 | 0.00 | 0.70 | 7.27 |
| F | 0.33 | 0.00 | 0.00 | 0.00 | 0.40 | 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 | 0.14 | 0.57 | 1.71 | 1.14 | 1.00 | 1.00 | 0.71 | 0.17 | 0.00 | 0.00 | 0.23 | 2.39 |
| G | 0.67 | 0.33 | 0.17 | 0.00 | 0.20 | 0.00 | 0.57 | 1.00 | 0.60 | 0.17 | 0.00 | 0.40 | 1.00 | 2.20 | 1.40 | 0.17 | 0.43 | 0.71 | 0.57 | 0.14 | 0.71 | 0.71 | 0.14 | 0.00 | 0.29 | 0.43 | 0.20 | 0.00 | 0.00 | 0.20 | 0.25 | 0.44 | 4.55 |
| H | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.14 | 0.14 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.20 | 0.00 | 0.17 | 0.00 | 0.00 | 0.06 | 0.64 |
| I | 0.67 | 0.17 | 0.33 | 0.43 | 0.40 | 0.00 | 0.43 | 0.33 | 0.00 | 1.00 | 2.00 | 2.00 | 1.00 | 1.00 | 2.00 | 3.50 | 3.43 | 4.14 | 3.43 | 1.86 | 1.71 | 2.57 | 2.86 | 2.71 | 3.14 | 2.86 | 2.60 | 1.00 | 1.33 | 0.20 | 1.00 | 1.62 | 16.67 |
| x | 3.50 | 2.33 | 0.83 | 1.14 | 1.20 | 1.40 | 1.57 | 2.33 | 1.40 | 2.67 | 2.71 | 2.60 | 0.67 | 1.00 | 2.40 | 2.50 | 3.29 | 1.86 | 2.86 | 3.86 | 2.57 | 1.86 | 1.86 | 2.71 | 3.57 | 2.29 | 5.00 | 5.00 | 4.17 | 4.20 | 1.25 | 2.47 | 25.48 |
| r | 0.00 | 0.17 | 0.00 | 0.00 | 0.40 | 0.80 | 1.00 | 0.33 | 0.40 | 0.17 | 0.43 | 0.40 | 0.17 | 0.20 | 1.00 | 0.50 | 0.43 | 0.86 | 0.71 | 0.43 | 0.57 | 0.43 | 0.71 | 0.29 | 0.29 | 0.57 | 0.60 | 1.43 | 0.83 | 0.00 | 0.00 | 0.46 | 4.69 |
| s | 1.17 | 1.50 | 0.67 | 0.57 | 0.40 | 0.60 | 1.71 | 2.67 | 1.80 | 2.67 | 3.00 | 2.60 | 3.00 | 3.20 | 4.00 | 3.33 | 4.00 | 3.71 | 3.71 | 2.29 | 1.43 | 1.57 | 2.57 | 3.71 | 3.86 | 2.57 | 2.00 | 1.14 | 1.50 | 1.40 | 1.50 | 2.25 | 23.24 |
| a | 1.17 | 1.00 | 1.83 | 0.86 | 1.00 | 2.20 | 4.86 | 4.83 | 5.40 | 2.83 | 1.86 | 2.80 | 2.83 | 3.40 | 3.00 | 5.00 | 4.14 | 5.57 | 5.71 | 5.57 | 2.71 | 3.00 | 3.57 | 3.71 | 3.43 | 2.71 | 2.20 | 0.86 | 1.17 | 2.20 | 3.50 | 3.06 | 31.59 |
| h | 1.00 | 0.83 | 0.33 | 0.00 | 0.00 | 0.20 | 0.14 | 0.33 | 0.00 | 0.50 | 0.29 | 0.20 | 0.00 | 0.00 | 0.20 | 0.50 | 0.29 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.29 | 0.60 | 0.57 | 1.17 | 1.40 | 2.00 | 0.39 | 3.99 |
| k | 0.33 | 0.17 | 1.17 | 1.86 | 1.60 | 1.20 | 1.00 | 0.67 | 0.40 | 0.67 | 0.57 | 0.60 | 0.50 | 0.80 | 0.20 | 0.83 | 0.57 | 0.86 | 0.86 | 1.14 | 2.14 | 1.86 | 1.29 | 1.29 | 1.86 | 1.86 | 2.20 | 2.14 | 1.00 | 1.20 | 0.25 | 1.07 | 11.00 |
| x | 2.50 | 1.00 | 1.00 | 0.71 | 0.80 | 0.80 | 1.00 | 1.50 | 0.20 | 2.50 | 3.57 | 3.00 | 1.50 | 1.40 | 3.60 | 4.50 | 4.14 | 4.43 | 4.14 | 4.14 | 3.29 | 3.57 | 3.43 | 3.86 | 5.14 | 4.43 | 5.40 | 4.14 | 2.83 | 2.40 | 2.00 | 2.80 | 28.92 |
| o | 3.50 | 3.50 | 2.00 | 1.71 | 2.00 | 3.60 | 6.71 | 7.17 | 8.20 | 6.00 | 4.29 | 5.20 | 5.17 | 6.80 | 5.20 | 5.83 | 6.86 | 7.29 | 7.57 | 6.57 | 4.14 | 2.57 | 4.00 | 6.00 | 6.29 | 4.43 | 5.20 | 4.57 | 4.50 | 6.40 | 5.75 | 5.13 | 52.91 |
| i | 1.00 | 1.33 | 1.83 | 1.43 | 1.00 | 2.00 | 2.57 | 2.17 | 1.00 | 1.00 | 1.00 | 1.00 | 0.50 | 0.40 | 2.00 | 2.33 | 1.71 | 1.29 | 2.29 | 2.14 | 1.43 | 2.57 | 2.43 | 1.86 | 1.43 | 1.00 | 1.80 | 2.14 | 2.50 | 1.60 | 0.75 | 1.60 | 16.47 |
| c | 0.17 | 0.17 | 0.00 | 0.57 | 0.80 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.57 | 0.71 | 0.14 | 0.29 | 0.14 | 0.29 | 0.43 | 0.20 | 0.29 | 0.00 | 0.00 | 0.00 | 0.16 | 1.70 |
| CV | 107.50 | 95.17 | 111.33 | 109.14 | 104.00 | 122.80 | 167.86 | 172.33 | 127.00 | 134.67 | 104.86 | 111.40 | 102.50 | 139.00 | 159.20 | 176.17 | 153.29 | 169.57 | 172.00 | 176.29 | 171.71 | 158.43 | 151.86 | 162.57 | 184.29 | 172.14 | 183.00 | 175.86 | 150.00 | 175.40 | 166.25 | 147.34 | 100 |
| CVn | 46.83 | 36.00 | 56.00 | 48.86 | 41.00 | 39.00 | 72.00 | 73.33 | 62.00 | 65.83 | 56.00 | 55.20 | 58.17 | 86.60 | 94.60 | 98.33 | 95.86 | 108.57 | 111.86 | 119.00 | 112.29 | 84.43 | 61.29 | 62.71 | 64.14 | 41.29 | 60.80 | 55.71 | 58.50 | 90.60 | 80.00 | 70.86 | 48.10 |
| CVs | 60.67 | 59.17 | 55.33 | 60.29 | 63.00 | 83.80 | 95.86 | 99.00 | 65.00 | 68.83 | 48.86 | 56.20 | 44.33 | 52.40 | 64.60 | 77.83 | 57.43 | 61.00 | 60.14 | 57.29 | 59.43 | 74.00 | 90.57 | 99.86 | 120.14 | 130.86 | 122.20 | 120.14 | 91.50 | 84.80 | 86.25 | 76.48 | 51.90 |
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