Statistics of sunspot activity
September, 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 | Average | % |
| W | 193.29 | 137.29 | 148.29 | 190.29 | 213.20 | 197.86 | 242.67 | 336.40 | 370.20 | 374.57 | 336.60 | 346.17 | 313.71 | 270.00 | 249.17 | 201.67 | 194.80 | 140.17 | 164.80 | 132.25 | 128.40 | 135.33 | 142.25 | 106.50 | 92.17 | 91.67 | 120.50 | 145.40 | 146.83 | 168.00 | 201.01 | 100 |
| Wn | 62.71 | 61.86 | 89.57 | 105.00 | 139.80 | 152.43 | 208.67 | 225.80 | 277.20 | 289.57 | 263.80 | 277.17 | 262.00 | 233.50 | 215.33 | 162.33 | 139.40 | 82.50 | 71.80 | 45.75 | 33.60 | 36.50 | 40.25 | 19.67 | 10.17 | 3.67 | 23.83 | 51.00 | 62.17 | 73.17 | 124.01 | 61.69 |
| Ws | 130.57 | 75.43 | 58.71 | 85.29 | 73.40 | 45.43 | 34.00 | 110.60 | 93.00 | 85.00 | 72.80 | 69.00 | 51.71 | 36.50 | 33.83 | 39.33 | 55.40 | 57.67 | 93.00 | 86.50 | 94.80 | 98.83 | 102.00 | 86.83 | 82.00 | 88.00 | 96.67 | 94.40 | 84.67 | 94.83 | 77.01 | 38.31 |
| n | 9.00 | 7.29 | 8.71 | 9.86 | 9.60 | 8.86 | 11.17 | 12.00 | 12.20 | 13.29 | 14.00 | 13.33 | 13.29 | 12.00 | 12.50 | 10.67 | 9.80 | 7.83 | 8.40 | 7.50 | 5.20 | 6.00 | 6.25 | 5.67 | 5.17 | 4.67 | 6.50 | 9.00 | 8.67 | 8.00 | 9.21 | 100 |
| A | 1.00 | 1.00 | 1.00 | 2.71 | 1.20 | 1.86 | 1.00 | 1.40 | 1.40 | 1.29 | 2.20 | 1.83 | 1.86 | 1.00 | 2.33 | 1.50 | 1.40 | 1.00 | 1.20 | 0.75 | 0.20 | 0.67 | 0.50 | 1.33 | 1.00 | 0.67 | 0.17 | 1.40 | 1.17 | 0.33 | 1.21 | 13.16 |
| B | 0.86 | 1.43 | 2.14 | 2.57 | 1.60 | 1.29 | 2.00 | 0.60 | 1.40 | 1.29 | 1.20 | 1.67 | 3.57 | 2.25 | 1.00 | 0.50 | 0.00 | 0.67 | 1.40 | 1.00 | 0.80 | 2.00 | 2.25 | 2.00 | 1.67 | 0.33 | 1.33 | 1.60 | 2.17 | 2.17 | 1.49 | 16.19 |
| C | 1.86 | 1.43 | 1.43 | 1.14 | 1.60 | 1.14 | 1.33 | 3.00 | 2.60 | 2.71 | 2.80 | 1.50 | 1.29 | 1.00 | 2.00 | 2.33 | 1.60 | 1.17 | 1.40 | 1.25 | 2.00 | 1.33 | 1.75 | 1.00 | 1.00 | 1.00 | 2.17 | 2.20 | 1.00 | 2.00 | 1.67 | 18.10 |
| D | 1.43 | 1.00 | 1.14 | 0.43 | 0.80 | 0.86 | 1.00 | 2.40 | 1.60 | 2.29 | 3.00 | 4.50 | 2.29 | 2.50 | 2.33 | 3.17 | 3.20 | 2.00 | 1.00 | 0.50 | 0.20 | 0.17 | 0.25 | 0.33 | 0.50 | 1.00 | 1.17 | 2.00 | 1.50 | 0.83 | 1.51 | 16.42 |
| E | 1.43 | 0.14 | 0.00 | 0.43 | 1.00 | 1.29 | 1.83 | 1.60 | 1.20 | 0.86 | 0.80 | 1.00 | 1.00 | 2.50 | 1.33 | 0.83 | 1.00 | 0.67 | 0.80 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.67 | 0.67 | 0.00 | 0.17 | 0.00 | 0.91 | 9.84 |
| F | 0.57 | 0.71 | 1.00 | 1.00 | 1.80 | 1.14 | 1.17 | 1.40 | 2.20 | 2.57 | 2.20 | 0.67 | 0.71 | 0.00 | 0.17 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.33 | 0.20 | 0.17 | 0.33 | 0.63 | 6.82 |
| G | 0.00 | 0.00 | 0.43 | 0.43 | 0.60 | 0.71 | 1.17 | 0.80 | 0.80 | 1.14 | 1.60 | 2.00 | 1.86 | 2.00 | 2.33 | 1.00 | 1.20 | 1.00 | 1.20 | 1.00 | 0.80 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.40 | 1.17 | 1.67 | 0.85 | 9.22 |
| H | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.25 | 0.17 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.17 | 0.17 | 0.05 | 0.58 |
| I | 1.86 | 1.57 | 1.57 | 1.14 | 1.00 | 0.57 | 1.67 | 0.80 | 1.00 | 1.14 | 0.20 | 0.17 | 0.43 | 0.50 | 0.83 | 1.00 | 1.40 | 1.33 | 1.40 | 2.00 | 0.20 | 0.83 | 0.50 | 0.00 | 0.00 | 0.67 | 0.50 | 0.80 | 1.17 | 0.50 | 0.89 | 9.68 |
| x | 1.86 | 2.43 | 3.14 | 5.29 | 2.80 | 3.14 | 3.00 | 2.00 | 2.80 | 2.57 | 3.40 | 3.50 | 5.43 | 3.25 | 3.33 | 2.00 | 1.40 | 1.67 | 2.60 | 1.75 | 1.00 | 2.67 | 2.75 | 3.33 | 2.67 | 1.00 | 1.50 | 3.00 | 3.33 | 2.50 | 2.70 | 29.34 |
| r | 0.43 | 0.14 | 0.71 | 0.57 | 0.40 | 0.14 | 1.00 | 1.20 | 1.20 | 0.86 | 0.60 | 0.17 | 0.14 | 1.50 | 0.83 | 0.33 | 0.60 | 0.67 | 0.60 | 0.75 | 0.80 | 0.17 | 0.50 | 0.00 | 0.00 | 0.33 | 0.33 | 0.40 | 0.83 | 0.83 | 0.57 | 6.17 |
| s | 3.14 | 2.57 | 1.29 | 1.00 | 0.80 | 1.29 | 1.50 | 0.80 | 0.80 | 1.14 | 0.60 | 1.00 | 0.71 | 1.25 | 2.00 | 1.83 | 2.20 | 2.17 | 1.40 | 2.50 | 1.20 | 1.00 | 0.75 | 0.67 | 0.17 | 0.67 | 1.50 | 1.40 | 1.17 | 0.33 | 1.29 | 14.05 |
| a | 1.43 | 1.00 | 2.29 | 1.57 | 2.60 | 1.29 | 2.67 | 5.00 | 4.20 | 5.57 | 6.00 | 5.50 | 5.43 | 4.25 | 5.17 | 5.00 | 2.40 | 1.33 | 2.00 | 1.50 | 1.20 | 1.17 | 1.25 | 0.67 | 1.33 | 1.67 | 1.33 | 3.00 | 2.50 | 3.17 | 2.78 | 30.20 |
| h | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.29 | 0.17 | 0.00 | 0.00 | 0.14 | 0.20 | 0.67 | 0.00 | 0.25 | 0.00 | 0.17 | 0.20 | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.50 | 0.12 | 1.28 |
| k | 2.14 | 1.14 | 1.29 | 1.43 | 2.60 | 2.71 | 2.83 | 3.00 | 3.20 | 3.00 | 3.20 | 2.50 | 1.57 | 1.50 | 1.17 | 1.33 | 3.00 | 2.00 | 1.40 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.83 | 1.20 | 0.67 | 0.67 | 1.75 | 18.95 |
| x | 2.86 | 2.57 | 2.57 | 3.86 | 2.20 | 2.43 | 2.67 | 2.20 | 2.40 | 2.43 | 2.40 | 2.00 | 2.57 | 1.75 | 3.33 | 2.67 | 2.80 | 2.33 | 2.60 | 2.75 | 0.40 | 1.50 | 1.00 | 1.33 | 1.00 | 1.33 | 0.67 | 2.60 | 2.50 | 1.00 | 2.16 | 23.41 |
| o | 4.00 | 3.71 | 5.00 | 4.29 | 4.60 | 3.57 | 5.00 | 5.80 | 5.60 | 6.00 | 7.20 | 7.33 | 7.71 | 6.00 | 6.33 | 5.33 | 5.00 | 4.17 | 4.60 | 3.75 | 3.80 | 3.33 | 4.00 | 3.33 | 3.17 | 2.00 | 4.67 | 5.60 | 5.33 | 6.33 | 4.89 | 53.03 |
| i | 0.71 | 0.29 | 0.29 | 0.86 | 1.80 | 2.14 | 2.67 | 3.60 | 4.20 | 4.86 | 4.40 | 4.00 | 3.00 | 4.25 | 2.83 | 2.67 | 2.00 | 1.33 | 1.00 | 0.50 | 0.20 | 0.17 | 0.25 | 0.33 | 0.17 | 0.67 | 0.67 | 0.80 | 0.83 | 0.67 | 1.74 | 18.86 |
| c | 1.43 | 0.71 | 0.86 | 0.86 | 1.00 | 0.71 | 0.83 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.50 | 0.80 | 1.00 | 1.00 | 0.67 | 0.83 | 0.67 | 0.50 | 0.00 | 0.00 | 0.00 | 0.43 | 4.69 |
| CV | 177.71 | 108.71 | 123.29 | 119.57 | 203.00 | 192.71 | 224.83 | 242.80 | 237.60 | 264.57 | 276.60 | 276.67 | 191.14 | 213.50 | 192.33 | 181.17 | 218.20 | 151.33 | 138.80 | 114.50 | 95.00 | 83.50 | 84.25 | 75.17 | 76.83 | 88.33 | 127.50 | 120.80 | 106.83 | 114.00 | 160.71 | 100 |
| CVn | 35.14 | 33.00 | 41.29 | 41.14 | 122.60 | 131.29 | 159.00 | 186.60 | 173.00 | 189.43 | 205.80 | 223.83 | 165.71 | 187.75 | 171.50 | 143.00 | 170.60 | 102.67 | 74.20 | 37.25 | 23.20 | 12.50 | 17.25 | 4.00 | 1.33 | 0.33 | 13.50 | 28.80 | 40.67 | 40.17 | 92.55 | 57.59 |
| CVs | 142.57 | 75.71 | 82.00 | 78.43 | 80.40 | 61.43 | 65.83 | 56.20 | 64.60 | 75.14 | 70.80 | 52.83 | 25.43 | 25.75 | 20.83 | 38.17 | 47.60 | 48.67 | 64.60 | 77.25 | 71.80 | 71.00 | 67.00 | 71.17 | 75.50 | 88.00 | 114.00 | 92.00 | 66.17 | 73.83 | 68.16 | 42.41 |
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