Statistics of sunspot activity
Solar activity in 2008
Visual indices of solar activity by National Geophysical Data Center
| | Average by |
monthIIIIII
IVVVI
VIIVIIIIX
XXIXIIdays| months | | | | | | | | | | | | | | |
| N | 31 | 29 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 | 30.42 | 30.42 |
| W | 6.19 | 3.94 | 17.38 | 5.74 | 6.76 | 6.88 | 1.10 | 0.74 | 2.09 | 6.24 | 7.82 | 1.31 | 5.53 | 5.52 |
| Wn | 1.06 | 0.00 | 0.35 | 2.40 | 2.86 | 0.23 | 0.00 | 0.74 | 1.32 | 4.18 | 7.82 | 0.00 | 1.75 | 1.75 |
| Ws | 5.13 | 3.94 | 17.02 | 3.35 | 3.91 | 6.65 | 1.10 | 0.00 | 0.77 | 2.06 | 0.00 | 1.31 | 3.78 | 3.77 |
| n | 0.49 | 0.30 | 1.17 | 0.48 | 0.55 | 0.61 | 0.10 | 0.06 | 0.17 | 0.47 | 0.50 | 0.10 | 0.42 | 0.41 |
| A | 0.26 | 0.09 | 0.34 | 0.20 | 0.26 | 0.40 | 0.07 | 0.05 | 0.05 | 0.19 | 0.00 | 0.00 | 0.16 | 0.16 |
| B | 0.09 | 0.16 | 0.15 | 0.10 | 0.23 | 0.03 | 0.02 | 0.02 | 0.08 | 0.11 | 0.08 | 0.05 | 0.10 | 0.09 |
| C | 0.07 | 0.03 | 0.25 | 0.04 | 0.04 | 0.05 | 0.00 | 0.00 | 0.04 | 0.10 | 0.12 | 0.00 | 0.06 | 0.06 |
| D | 0.02 | 0.02 | 0.33 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.06 | 0.15 | 0.05 | 0.06 | 0.05 |
| E | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.01 | 0.00 |
| 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 |
| G | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 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 | 0.00 | 0.00 |
| I | 0.05 | 0.00 | 0.06 | 0.11 | 0.01 | 0.13 | 0.01 | 0.00 | 0.00 | 0.00 | 0.13 | 0.00 | 0.04 | 0.04 |
| x | 0.35 | 0.25 | 0.50 | 0.31 | 0.49 | 0.43 | 0.09 | 0.06 | 0.13 | 0.31 | 0.08 | 0.05 | 0.26 | 0.25 |
| r | 0.02 | 0.02 | 0.04 | 0.03 | 0.02 | 0.04 | 0.01 | 0.00 | 0.02 | 0.10 | 0.07 | 0.02 | 0.04 | 0.03 |
| s | 0.06 | 0.01 | 0.22 | 0.05 | 0.04 | 0.11 | 0.00 | 0.00 | 0.01 | 0.06 | 0.27 | 0.03 | 0.07 | 0.07 |
| a | 0.06 | 0.01 | 0.33 | 0.09 | 0.00 | 0.02 | 0.00 | 0.00 | 0.01 | 0.00 | 0.08 | 0.00 | 0.05 | 0.05 |
| h | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| k | 0.00 | 0.00 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 |
| x | 0.31 | 0.09 | 0.40 | 0.32 | 0.27 | 0.53 | 0.07 | 0.05 | 0.05 | 0.19 | 0.13 | 0.00 | 0.20 | 0.20 |
| o | 0.18 | 0.19 | 0.52 | 0.15 | 0.28 | 0.06 | 0.02 | 0.02 | 0.11 | 0.16 | 0.25 | 0.10 | 0.18 | 0.17 |
| i | 0.01 | 0.01 | 0.20 | 0.01 | 0.00 | 0.02 | 0.00 | 0.00 | 0.01 | 0.11 | 0.12 | 0.00 | 0.04 | 0.04 |
| c | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| CV | 1.95 | 0.94 | 13.96 | 2.02 | 1.21 | 1.98 | 0.14 | 0.08 | 0.60 | 2.27 | 6.35 | 1.11 | 2.73 | 2.72 |
| CVn | 0.32 | 0.00 | 0.03 | 0.67 | 0.44 | 0.02 | 0.00 | 0.08 | 0.50 | 2.06 | 6.35 | 0.00 | 0.87 | 0.87 |
| CVs | 1.63 | 0.94 | 13.93 | 1.35 | 0.77 | 1.96 | 0.14 | 0.00 | 0.10 | 0.21 | 0.00 | 1.11 | 1.86 | 1.84 |
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