Statistics of sunspot activity
March, 1997
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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 11.00 | 12.00 | 23.00 | 22.60 | 20.00 | 15.33 | 19.00 | 18.33 | 25.75 | 35.00 | 16.60 | 14.75 | 12.20 | 0.00 | 17.50 | 0.00 | 11.00 | 0.00 | 0.00 | 0.00 | 0.00 | 13.25 | 18.20 | 26.25 | 29.25 | 22.00 | 12.36 | 100 |
| Wn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 11.00 | 12.00 | 13.60 | 13.20 | 17.00 | 15.33 | 19.00 | 18.33 | 16.25 | 11.20 | 0.00 | 0.00 | 0.00 | 0.00 | 5.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 4.92 | 39.79 |
| Ws | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 9.40 | 9.40 | 3.00 | 0.00 | 0.00 | 0.00 | 9.50 | 23.80 | 16.60 | 14.75 | 12.20 | 0.00 | 12.00 | 0.00 | 11.00 | 0.00 | 0.00 | 0.00 | 0.00 | 13.25 | 18.20 | 26.25 | 29.25 | 22.00 | 7.44 | 60.21 |
| n | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 1.80 | 1.80 | 1.25 | 1.00 | 1.00 | 1.00 | 1.75 | 2.60 | 1.20 | 1.00 | 1.00 | 0.00 | 1.50 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.80 | 100 |
| A | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.20 | 0.20 | 0.00 | 0.60 | 0.00 | 0.50 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 21.29 |
| B | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.25 | 0.00 | 0.60 | 0.67 | 0.75 | 1.40 | 0.60 | 0.75 | 0.20 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.25 | 30.59 |
| C | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.60 | 1.00 | 1.00 | 0.40 | 0.33 | 0.00 | 0.00 | 0.40 | 0.25 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.80 | 0.25 | 0.00 | 0.20 | 0.24 | 29.85 |
| D | 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 | 0.50 | 0.25 | 0.40 | 0.04 | 4.62 |
| 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 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 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 | 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 | 0.00 | 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 | 0.25 | 0.75 | 0.40 | 0.05 | 5.62 |
| 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 | 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 |
| I | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.40 | 0.60 | 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 | 0.06 | 8.03 |
| x | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.60 | 0.25 | 0.00 | 0.60 | 0.67 | 1.75 | 2.60 | 0.80 | 0.75 | 0.80 | 0.00 | 1.50 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.42 | 51.87 |
| r | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.20 | 0.00 | 0.00 | 0.20 | 0.33 | 0.00 | 0.00 | 0.40 | 0.25 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.25 | 0.00 | 0.09 | 11.38 |
| s | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.50 | 0.20 | 0.20 | 0.25 | 0.67 | 0.20 | 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 | 0.20 | 0.50 | 0.25 | 0.20 | 0.13 | 15.73 |
| a | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.50 | 0.80 | 0.80 | 0.75 | 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 | 0.50 | 0.50 | 0.80 | 0.17 | 21.02 |
| 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 | 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 |
| k | 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 |
| x | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.80 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.20 | 0.20 | 0.00 | 0.60 | 0.00 | 0.50 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.24 | 29.32 |
| o | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 | 0.80 | 1.25 | 1.00 | 1.00 | 1.00 | 0.75 | 1.40 | 1.00 | 1.00 | 0.40 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 1.00 | 1.00 | 1.00 | 1.00 | 0.56 | 69.68 |
| i | 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 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 1.00 |
| 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 | 0.00 | 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 |
| CV | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 9.25 | 9.50 | 10.60 | 9.80 | 9.25 | 10.00 | 4.40 | 3.00 | 2.50 | 4.00 | 3.40 | 2.75 | 2.00 | 0.00 | 2.50 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.25 | 5.60 | 19.50 | 19.75 | 18.40 | 4.82 | 100 |
| CVn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 9.25 | 9.50 | 8.40 | 8.00 | 8.75 | 10.00 | 4.40 | 3.00 | 1.25 | 0.80 | 0.00 | 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 | 2.06 | 42.72 |
| CVs | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.20 | 1.80 | 0.50 | 0.00 | 0.00 | 0.00 | 1.25 | 3.20 | 3.40 | 2.75 | 2.00 | 0.00 | 2.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.25 | 5.60 | 19.50 | 19.75 | 18.40 | 2.76 | 57.28 |
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