Statistics of sunspot activity
April, 2006
Visual indices of solar activity by author's observations
| Date | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | Average | % |
| W |   | 57 |   |   | 69 | 69 | 69 | 63 | 34 |   |   |   | 64 | 51 |   |   |   | 0 | 0 |   | 14 |   |   | 19 |   |   | 67 | 51 |   | 57 | 45.60 | 100 |
| Wn |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 12 | 0.80 | 1.75 |
| Ws |   | 57 |   |   | 69 | 69 | 69 | 63 | 34 |   |   |   | 64 | 51 |   |   |   | 0 | 0 |   | 14 |   |   | 19 |   |   | 67 | 51 |   | 45 | 44.80 | 98.25 |
| n |   | 3 |   |   | 4 | 4 | 4 | 4 | 2 |   |   |   | 5 | 4 |   |   |   | 0 | 0 |   | 1 |   |   | 1 |   |   | 3 | 2 |   | 3 | 2.67 | 100 |
| A |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.00 | 0.00 |
| B |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 1 | 1 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.13 | 5.00 |
| C |   | 0 |   |   | 0 | 1 | 1 | 1 | 0 |   |   |   | 1 | 2 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 1 | 0 |   | 0 | 0.47 | 17.50 |
| D |   | 1 |   |   | 3 | 3 | 3 | 3 | 1 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 1 |   |   | 1 |   |   | 2 | 2 |   | 1 | 1.40 | 52.50 |
| E |   | 1 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 1 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.13 | 5.00 |
| F |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.00 | 0.00 |
| G |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 1 | 0.07 | 2.50 |
| H |   | 1 |   |   | 1 | 0 | 0 | 0 | 0 |   |   |   | 1 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.20 | 7.50 |
| I |   | 0 |   |   | 0 | 0 | 0 | 0 | 1 |   |   |   | 1 | 1 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 1 | 0.27 | 10.00 |
| x |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 1 | 1 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.13 | 5.00 |
| r |   | 1 |   |   | 0 | 1 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 1 | 0 |   | 0 | 0.20 | 7.50 |
| s |   | 0 |   |   | 1 | 1 | 1 | 1 | 1 |   |   |   | 3 | 2 |   |   |   | 0 | 0 |   | 1 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.73 | 27.50 |
| a |   | 1 |   |   | 2 | 1 | 2 | 2 | 1 |   |   |   | 1 | 1 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 1 | 1 |   | 3 | 1.07 | 40.00 |
| h |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.00 | 0.00 |
| k |   | 1 |   |   | 1 | 1 | 1 | 1 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 1 |   |   | 1 | 1 |   | 0 | 0.53 | 20.00 |
| x |   | 1 |   |   | 1 | 0 | 0 | 0 | 1 |   |   |   | 2 | 1 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 1 | 0.47 | 17.50 |
| o |   | 1 |   |   | 2 | 3 | 2 | 4 | 0 |   |   |   | 2 | 3 |   |   |   | 0 | 0 |   | 1 |   |   | 0 |   |   | 1 | 1 |   | 1 | 1.40 | 52.50 |
| i |   | 1 |   |   | 1 | 1 | 2 | 0 | 1 |   |   |   | 1 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 1 |   |   | 2 | 1 |   | 1 | 0.80 | 30.00 |
| c |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.00 | 0.00 |
| CV |   | 67 |   |   | 97 | 98 | 107 | 101 | 32 |   |   |   | 56 | 31 |   |   |   | 0 | 0 |   | 25 |   |   | 46 |   |   | 73 | 65 |   | 49 | 56.47 | 100 |
| CVn |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 7 | 0.47 | 0.83 |
| CVs |   | 67 |   |   | 97 | 98 | 107 | 101 | 32 |   |   |   | 56 | 31 |   |   |   | 0 | 0 |   | 25 |   |   | 46 |   |   | 73 | 65 |   | 42 | 56.00 | 99.17 |
| gr |   | 3 |   |   | 4 | 4 | 4 | 4 | 1 |   |   |   | 3 | 3 |   |   |   | 0 | 0 |   | 1 |   |   | 1 |   |   | 3 | 2 |   | 3 | 2.40 | 90.00 |
| grfp |   | 14 |   |   | 18 | 20 | 23 | 17 | 6 |   |   |   | 4 | 4 |   |   |   | 0 | 0 |   | 2 |   |   | 6 |   |   | 20 | 16 |   | 16 | 11.07 | 59.29 |
| grf |   | 13 |   |   | 11 | 9 | 6 | 6 | 7 |   |   |   | 8 | 6 |   |   |   | 0 | 0 |   | 2 |   |   | 3 |   |   | 17 | 15 |   | 11 | 7.60 | 40.71 |
| efp |   | 0 |   |   | 0 | 0 | 0 | 0 | 1 |   |   |   | 2 | 1 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.27 | 10.00 |
| ef |   | 0 |   |   | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 | 0 |   |   |   | 0 | 0 |   | 0 |   |   | 0 |   |   | 0 | 0 |   | 0 | 0.00 | 0.00 |
| Cond |   | 1 |   |   | 2 | 4 | 4 | 3 | 3 |   |   |   | 2 | 2 |   |   |   | 2 | 1 |   | 1 |   |   | 2 |   |   | 2 | 3 |   | 3 | 2.33 | 53.33 |
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