Provisional sunspot numbers February 1997 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 1. | 0.4 0.0 0.4 | 6 0 6 | 14 | 7 20 8 | | 2. | 0.8 0.8 1.6 | 12 15 27 | 126 | 8 20 9 | | 3. | 0.8 0.8 1.6 | 17 16 33 | 465 | 3 6 1 | | 4. | 0.7 0.7 1.4 | 18 14 31 | 339 | 3 4 3 | | 5. | 0.8 0.8 1.5 | 14 11 24 | 155 | 8 13 7 | | 6. | 0.8 0.7 1.4 | 10 8 18 | 84 | 9 17 5 | | 7. | 0.6 0.7 1.2 | 7 8 15 | 82 | 7 16 5 | | 8. | 0.1 0.6 0.7 | 1 7 9 | 36 | 12 22 9 | | 9. | 0.0 0.5 0.5 | 0 6 6 | 19 | 10 18 6 | | 10. | 0.0 0.0 0.0 | 0 0 0 | 0 | 9 18 5 | | 11. | 0.0 0.0 0.0 | 0 0 0 | 0 | 9 14 5 | | 12. | 0.0 0.0 0.0 | 0 0 0 | 0 | 3 4 3 | | 13. | 0.0 0.0 0.1 | 0 0 1 | 2 | 5 9 3 | | 14. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 13 5 | | 15. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 10 3 | | 16. | 0.0 0.3 0.3 | 0 4 4 | 10 | 11 18 8 | | 17. | 0.0 0.1 0.1 | 0 1 1 | 1 | 9 13 5 | | 18. | 0.4 0.1 0.5 | 6 1 7 | 12 | 6 11 5 | | 19. | 0.5 0.1 0.7 | 6 2 8 | 6 | 6 14 4 | | 20. | 0.1 0.0 0.1 | 1 0 1 | 10 | 10 17 3 | | 21. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 9 4 | | 22. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 16 7 | | 23. | 0.0 0.0 0.0 | 0 0 0 | 1 | 7 18 7 | | 24. | 0.6 0.0 0.6 | 6 0 6 | 4 | 6 6 2 | | 25. | 0.3 0.0 0.3 | 3 0 3 | 5 | 5 10 5 | | 26. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 10 3 | | 27. | 0.1 0.0 0.1 | 1 0 1 | 2 | 7 14 5 | | 28. | 0.0 0.0 0.0 | 0 0 0 | 0 | 14 27 11 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.2 0.2 0.5 | 3.9 3.3 7.2 | 49 | 7 14 5 | +------+----------------+-------------------+-------+--------------+ | Days | 28 28 28 | 28 28 28 | 28 | | +------+----------------+-------------------+-------+--------------+ Based on 387 observations of 32 stations. Edited by Martin Dillig