Statistics of sunspot activity
Solar activity in 2005
Visual indices of solar activity by National Geophysical Data Center
|   | Average by |
monthIIIIII
IVVVI
VIIVIIIIX
XXIXIIdays| months | | | | | | | | | | | | | | |
| N | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30.42 | 30.42 |
| W | 47.41 | 42.06 | 38.39 | 35.70 | 57.52 | 53.35 | 58.89 | 54.50 | 32.94 | 14.84 | 28.28 | 55.14 | 43.33 | 43.25 |
| Wn | 24.07 | 8.10 | 13.71 | 8.95 | 14.52 | 14.05 | 32.75 | 30.15 | 9.21 | 4.52 | 0.58 | 24.66 | 15.58 | 15.44 |
| Ws | 23.33 | 33.95 | 24.67 | 26.75 | 43.01 | 39.30 | 26.15 | 24.35 | 23.73 | 10.32 | 27.70 | 30.49 | 27.75 | 27.81 |
| n | 2.59 | 2.98 | 2.20 | 2.43 | 2.98 | 3.02 | 3.22 | 3.17 | 1.55 | 1.07 | 1.67 | 3.80 | 2.55 | 2.56 |
| A | 0.28 | 0.46 | 0.30 | 0.29 | 0.31 | 0.31 | 0.21 | 0.32 | 0.14 | 0.28 | 0.25 | 0.30 | 0.29 | 0.29 |
| B | 0.12 | 0.26 | 0.13 | 0.20 | 0.18 | 0.18 | 0.18 | 0.15 | 0.03 | 0.11 | 0.22 | 0.14 | 0.16 | 0.16 |
| C | 0.44 | 0.54 | 0.50 | 0.55 | 0.58 | 0.59 | 0.54 | 0.67 | 0.38 | 0.27 | 0.41 | 1.05 | 0.55 | 0.54 |
| D | 0.77 | 0.58 | 0.58 | 0.48 | 1.03 | 1.06 | 1.22 | 1.00 | 0.15 | 0.17 | 0.26 | 0.84 | 0.68 | 0.68 |
| E | 0.20 | 0.04 | 0.13 | 0.10 | 0.24 | 0.16 | 0.26 | 0.06 | 0.21 | 0.00 | 0.11 | 0.12 | 0.13 | 0.14 |
| F | 0.08 | 0.03 | 0.00 | 0.00 | 0.07 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.16 | 0.00 | 0.04 | 0.04 |
| G | 0.12 | 0.04 | 0.11 | 0.02 | 0.23 | 0.15 | 0.08 | 0.06 | 0.08 | 0.00 | 0.07 | 0.05 | 0.08 | 0.08 |
| H | 0.01 | 0.21 | 0.19 | 0.09 | 0.11 | 0.05 | 0.01 | 0.05 | 0.02 | 0.00 | 0.01 | 0.00 | 0.06 | 0.06 |
| I | 0.58 | 0.83 | 0.25 | 0.71 | 0.24 | 0.53 | 0.71 | 0.86 | 0.44 | 0.24 | 0.18 | 1.29 | 0.57 | 0.57 |
| x | 0.39 | 0.72 | 0.43 | 0.49 | 0.49 | 0.49 | 0.39 | 0.47 | 0.17 | 0.39 | 0.47 | 0.44 | 0.44 | 0.45 |
| r | 0.11 | 0.08 | 0.09 | 0.17 | 0.29 | 0.23 | 0.19 | 0.22 | 0.07 | 0.09 | 0.11 | 0.17 | 0.15 | 0.15 |
| s | 0.82 | 0.91 | 0.39 | 0.86 | 0.58 | 0.68 | 1.06 | 1.03 | 0.42 | 0.21 | 0.38 | 1.56 | 0.74 | 0.74 |
| a | 0.90 | 0.69 | 0.89 | 0.69 | 1.06 | 1.09 | 1.24 | 1.15 | 0.50 | 0.38 | 0.44 | 1.31 | 0.87 | 0.86 |
| h | 0.02 | 0.20 | 0.17 | 0.01 | 0.16 | 0.16 | 0.06 | 0.05 | 0.03 | 0.00 | 0.02 | 0.18 | 0.09 | 0.09 |
| k | 0.35 | 0.38 | 0.23 | 0.22 | 0.41 | 0.38 | 0.28 | 0.25 | 0.37 | 0.00 | 0.26 | 0.13 | 0.27 | 0.27 |
| x | 0.87 | 1.50 | 0.75 | 1.09 | 0.66 | 0.88 | 0.93 | 1.22 | 0.60 | 0.52 | 0.44 | 1.59 | 0.92 | 0.92 |
| o | 1.05 | 1.24 | 1.03 | 1.02 | 1.56 | 1.48 | 1.25 | 1.18 | 0.48 | 0.41 | 0.86 | 1.66 | 1.10 | 1.10 |
| i | 0.35 | 0.21 | 0.40 | 0.26 | 0.54 | 0.59 | 0.70 | 0.64 | 0.30 | 0.12 | 0.29 | 0.45 | 0.41 | 0.40 |
| c | 0.33 | 0.03 | 0.02 | 0.07 | 0.23 | 0.08 | 0.34 | 0.13 | 0.17 | 0.02 | 0.08 | 0.09 | 0.13 | 0.13 |
| CV | 47.75 | 46.65 | 38.18 | 32.09 | 59.23 | 54.56 | 57.96 | 48.25 | 31.10 | 8.46 | 26.99 | 53.48 | 42.09 | 42.06 |
| CVn | 27.31 | 5.73 | 8.26 | 6.55 | 17.85 | 14.95 | 33.02 | 22.81 | 9.69 | 2.69 | 0.33 | 23.00 | 14.49 | 14.35 |
| CVs | 20.44 | 40.92 | 29.92 | 25.54 | 41.38 | 39.62 | 24.94 | 25.44 | 21.40 | 5.77 | 26.67 | 30.48 | 27.59 | 27.71 |
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