Statistics of sunspot activity
July, 1998
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 | 106.00 | 113.00 | 122.00 | 128.50 | 125.50 | 102.67 | 78.00 | 53.33 | 51.67 | 79.00 | 76.33 | 58.75 | 59.00 | 64.33 | 76.75 | 102.00 | 81.33 | 60.25 | 52.50 | 85.33 | 107.50 | 124.50 | 133.75 | 98.50 | 77.25 | 83.00 | 91.50 | 110.00 | 104.67 | 69.00 | 90.33 | 89.23 | 100 |
| Wn | 43.50 | 41.00 | 45.00 | 41.50 | 44.50 | 43.33 | 46.00 | 38.33 | 22.00 | 34.00 | 29.67 | 27.50 | 13.33 | 17.33 | 14.00 | 19.75 | 14.67 | 5.50 | 0.00 | 12.33 | 20.75 | 44.00 | 57.25 | 55.50 | 52.25 | 59.50 | 65.50 | 86.50 | 83.33 | 45.00 | 62.33 | 38.23 | 42.84 |
| Ws | 62.50 | 72.00 | 77.00 | 87.00 | 81.00 | 59.33 | 32.00 | 15.00 | 29.67 | 45.00 | 46.67 | 31.25 | 45.67 | 47.00 | 62.75 | 82.25 | 66.67 | 54.75 | 52.50 | 73.00 | 86.75 | 80.50 | 76.50 | 43.00 | 25.00 | 23.50 | 26.00 | 23.50 | 21.33 | 24.00 | 28.00 | 51.00 | 57.16 |
| n | 7.25 | 8.00 | 8.00 | 7.75 | 8.00 | 7.33 | 5.67 | 4.00 | 3.33 | 6.00 | 5.33 | 4.25 | 3.67 | 3.67 | 4.75 | 6.25 | 5.33 | 3.75 | 3.25 | 5.67 | 7.75 | 8.50 | 8.50 | 6.00 | 4.25 | 4.25 | 5.50 | 7.50 | 6.33 | 5.00 | 7.00 | 5.87 | 100 |
| A | 0.25 | 0.00 | 0.00 | 0.25 | 1.25 | 1.33 | 2.00 | 1.00 | 0.67 | 2.50 | 0.67 | 0.00 | 1.33 | 1.67 | 1.25 | 1.25 | 1.33 | 0.50 | 0.75 | 2.00 | 0.50 | 1.25 | 1.25 | 0.50 | 0.50 | 0.75 | 1.00 | 1.75 | 0.67 | 0.50 | 2.67 | 1.01 | 17.23 |
| B | 0.25 | 0.67 | 1.25 | 0.75 | 2.25 | 2.33 | 1.00 | 0.67 | 0.33 | 0.50 | 1.33 | 0.75 | 0.00 | 0.00 | 2.00 | 1.50 | 1.00 | 1.50 | 1.25 | 1.00 | 2.25 | 1.75 | 3.00 | 1.00 | 0.25 | 0.75 | 1.50 | 1.25 | 1.67 | 0.00 | 0.67 | 1.11 | 18.93 |
| C | 3.00 | 3.33 | 2.50 | 1.75 | 1.75 | 1.67 | 1.33 | 1.67 | 1.33 | 1.50 | 1.67 | 1.50 | 0.67 | 1.33 | 0.75 | 1.75 | 1.67 | 0.50 | 0.25 | 1.67 | 2.50 | 1.50 | 2.75 | 2.25 | 1.25 | 0.50 | 0.00 | 0.75 | 1.33 | 1.50 | 1.33 | 1.52 | 25.99 |
| D | 0.25 | 0.00 | 0.25 | 1.25 | 0.25 | 0.00 | 0.00 | 0.67 | 1.00 | 0.50 | 0.33 | 0.75 | 0.67 | 0.33 | 0.75 | 1.75 | 1.33 | 1.25 | 1.00 | 1.00 | 0.50 | 1.75 | 0.25 | 1.00 | 1.75 | 1.50 | 1.50 | 2.25 | 1.67 | 1.50 | 0.00 | 0.87 | 14.85 |
| E | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.75 | 0.25 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.82 |
| 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 | 0.00 | 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 | 0.00 | 0.00 |
| G | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.25 | 0.50 | 0.25 | 0.50 | 0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 1.83 |
| H | 0.00 | 0.33 | 0.00 | 0.50 | 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 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 1.00 | 0.12 | 2.02 |
| I | 3.25 | 3.33 | 4.00 | 3.25 | 2.50 | 1.67 | 1.33 | 0.00 | 0.00 | 1.00 | 1.33 | 1.25 | 1.00 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.50 | 0.25 | 0.50 | 0.00 | 0.25 | 1.00 | 1.50 | 1.00 | 1.00 | 1.33 | 1.08 | 18.33 |
| x | 0.50 | 0.67 | 1.25 | 1.00 | 3.50 | 3.67 | 3.00 | 1.67 | 1.00 | 3.00 | 2.00 | 0.75 | 1.33 | 1.67 | 3.25 | 2.75 | 2.33 | 2.00 | 2.00 | 3.00 | 2.75 | 3.00 | 4.25 | 1.50 | 0.75 | 1.50 | 2.50 | 3.00 | 2.33 | 0.50 | 3.33 | 2.12 | 36.16 |
| r | 0.00 | 0.33 | 1.25 | 1.25 | 0.75 | 0.67 | 0.67 | 0.33 | 0.00 | 0.50 | 1.00 | 1.25 | 1.33 | 0.67 | 0.25 | 1.00 | 0.33 | 0.00 | 0.25 | 0.33 | 0.75 | 0.75 | 1.25 | 0.50 | 0.50 | 0.25 | 0.00 | 0.75 | 0.00 | 0.50 | 0.67 | 0.58 | 9.95 |
| s | 5.00 | 4.33 | 3.75 | 2.75 | 3.25 | 2.00 | 1.33 | 1.00 | 2.00 | 1.00 | 1.33 | 1.50 | 0.33 | 0.33 | 0.50 | 1.00 | 1.00 | 1.00 | 0.50 | 1.67 | 2.00 | 2.00 | 0.75 | 1.25 | 0.25 | 0.50 | 1.00 | 1.50 | 2.00 | 1.50 | 1.00 | 1.59 | 27.13 |
| a | 1.75 | 2.33 | 1.75 | 2.00 | 0.50 | 0.67 | 0.67 | 0.67 | 0.00 | 1.50 | 1.00 | 0.75 | 0.67 | 1.00 | 0.75 | 1.50 | 1.67 | 0.75 | 0.50 | 0.67 | 1.25 | 2.00 | 1.25 | 1.50 | 1.50 | 0.00 | 0.00 | 0.25 | 0.00 | 0.50 | 1.00 | 0.98 | 16.68 |
| h | 0.00 | 0.33 | 0.00 | 0.25 | 0.00 | 0.33 | 0.00 | 0.33 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.25 | 0.50 | 0.75 | 1.00 | 0.75 | 1.00 | 1.00 | 1.00 | 0.50 | 0.67 | 0.31 | 5.22 |
| k | 0.00 | 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.50 | 0.50 | 0.50 | 0.25 | 1.25 | 1.00 | 1.00 | 1.00 | 1.50 | 0.33 | 0.28 | 4.86 |
| x | 3.50 | 3.67 | 4.00 | 4.00 | 3.75 | 3.33 | 3.33 | 1.00 | 0.67 | 3.50 | 2.00 | 1.25 | 2.33 | 2.00 | 1.25 | 1.25 | 1.33 | 0.50 | 0.75 | 2.00 | 2.25 | 2.75 | 1.50 | 1.00 | 0.50 | 1.00 | 2.00 | 3.25 | 1.67 | 2.00 | 5.00 | 2.20 | 37.58 |
| o | 3.75 | 4.00 | 4.00 | 3.50 | 4.25 | 4.00 | 2.33 | 3.00 | 2.67 | 2.50 | 3.33 | 3.00 | 1.33 | 1.67 | 3.25 | 4.75 | 3.33 | 3.00 | 2.50 | 3.67 | 5.50 | 5.50 | 6.25 | 4.00 | 2.50 | 2.50 | 2.50 | 3.25 | 4.00 | 3.00 | 1.67 | 3.37 | 57.47 |
| i | 0.00 | 0.33 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 1.00 | 0.75 | 0.50 | 0.50 | 0.50 | 0.33 | 0.00 | 0.33 | 0.19 | 3.21 |
| c | 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 | 0.25 | 0.00 | 0.33 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.50 | 0.25 | 0.50 | 0.50 | 0.33 | 0.00 | 0.00 | 0.10 | 1.74 |
| CV | 73.00 | 83.67 | 63.50 | 92.00 | 48.75 | 48.33 | 26.00 | 43.33 | 49.00 | 33.50 | 34.33 | 37.25 | 24.33 | 20.00 | 29.25 | 51.50 | 50.00 | 39.50 | 26.50 | 42.33 | 87.75 | 100.25 | 85.75 | 98.75 | 97.00 | 104.25 | 114.00 | 128.00 | 121.33 | 111.50 | 64.33 | 65.45 | 100 |
| CVn | 34.25 | 30.00 | 23.75 | 22.50 | 12.75 | 13.33 | 12.67 | 17.67 | 11.67 | 11.00 | 13.33 | 12.50 | 4.33 | 6.00 | 1.50 | 2.50 | 1.33 | 0.50 | 0.00 | 1.33 | 6.50 | 21.50 | 20.75 | 40.75 | 45.25 | 56.25 | 64.00 | 80.00 | 77.33 | 70.00 | 22.67 | 23.80 | 36.37 |
| CVs | 38.75 | 53.67 | 39.75 | 69.50 | 36.00 | 35.00 | 13.33 | 25.67 | 37.33 | 22.50 | 21.00 | 24.75 | 20.00 | 14.00 | 27.75 | 49.00 | 48.67 | 39.00 | 26.50 | 41.00 | 81.25 | 78.75 | 65.00 | 58.00 | 51.75 | 48.00 | 50.00 | 48.00 | 44.00 | 41.50 | 41.67 | 41.65 | 63.63 |
|
