Statistics of sunspot activity
September, 2018
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 |   |   |   | 0 | 0 |   |   |   | 16 | 12 | 0 | 13 | 11 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 4.00 | 100 |
| Wn |   |   |   | 0 | 0 |   |   |   | 16 | 12 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 2.15 | 53.85 |
| Ws |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 13 | 11 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 1.85 | 46.15 |
| n |   |   |   | 0 | 0 |   |   |   | 1 | 1 | 0 | 1 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.31 | 100 |
| A |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.08 | 25.00 |
| B |   |   |   | 0 | 0 |   |   |   | 0 | 1 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.08 | 25.00 |
| C |   |   |   | 0 | 0 |   |   |   | 1 | 0 | 0 | 1 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.15 | 50.00 |
| D |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| E |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| F |   |   |   | 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 |   | 0.00 | 0.00 |
| H |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| I |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| x |   |   |   | 0 | 0 |   |   |   | 0 | 1 | 0 | 0 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.15 | 50.00 |
| r |   |   |   | 0 | 0 |   |   |   | 1 | 0 | 0 | 1 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.15 | 50.00 |
| s |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| a |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| h |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| k |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| x |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.08 | 25.00 |
| o |   |   |   | 0 | 0 |   |   |   | 0 | 1 | 0 | 1 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.15 | 50.00 |
| i |   |   |   | 0 | 0 |   |   |   | 1 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.08 | 25.00 |
| c |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| CV |   |   |   | 0 | 0 |   |   |   | 6 | 2 | 0 | 5 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 1.08 | 100 |
| CVn |   |   |   | 0 | 0 |   |   |   | 6 | 2 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.62 | 57.14 |
| CVs |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 5 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.46 | 42.86 |
| gr |   |   |   | 0 | 0 |   |   |   | 1 | 1 | 0 | 1 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.23 | 75.00 |
| grfp |   |   |   | 0 | 0 |   |   |   | 1 | 0 | 0 | 1 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.15 | 18.18 |
| grf |   |   |   | 0 | 0 |   |   |   | 5 | 2 | 0 | 2 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.69 | 81.82 |
| efp |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 0 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.00 | 0.00 |
| ef |   |   |   | 0 | 0 |   |   |   | 0 | 0 | 0 | 0 | 1 | 0 |   |   |   | 0 |   |   |   |   | 0 | 0 |   |   | 0 |   | 0 |   | 0.08 | 25.00 |
| Cond |   |   |   | 3 | 2 |   |   |   | 3 | 3 | 2 | 2 | 1 | 2 |   |   |   | 3 |   |   |   |   | 3 | 2 |   |   | 3 |   | 4 |   | 2.54 | 49.23 |
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