Provisional sunspot numbers February 1998 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 1. | 0.3 0.7 1.0 | 4 9 13 | 91 | 12 30 12 | | 2. | 0.1 0.8 0.9 | 1 10 11 | 56 | 10 22 7 | | 3. | 0.5 1.2 1.7 | 7 15 22 | 82 | 11 26 11 | | 4. | 0.7 0.8 1.5 | 11 9 20 | 137 | 11 24 9 | | 5. | 0.8 0.9 1.8 | 10 12 23 | 193 | 9 18 4 | | 6. | 0.7 1.3 2.0 | 8 17 25 | 139 | 7 12 4 | | 7. | 0.3 1.2 1.5 | 5 15 20 | 84 | 8 17 7 | | 8. | 0.0 1.8 1.8 | 0 21 21 | 80 | 9 20 5 | | 9. | 0.0 2.3 2.3 | 0 29 29 | 104 | 12 20 5 | | 10. | 0.1 2.2 2.4 | 2 27 28 | 82 | 12 23 7 | | 11. | 0.1 2.3 2.4 | 2 29 31 | 151 | 9 20 5 | | 12. | 0.2 2.4 2.6 | 2 34 36 | 307 | 7 16 4 | | 13. | 0.4 2.6 3.0 | 5 44 49 | 496 | 9 14 2 | | 14. | 1.1 2.2 3.3 | 13 45 59 | 689 | 8 27 10 | | 15. | 0.7 1.8 2.6 | 9 43 53 | 818 | 8 20 7 | | 16. | 1.3 1.5 2.9 | 18 37 55 | 895 | 8 12 2 | | 17. | 1.1 1.1 2.2 | 14 30 44 | 729 | 10 18 6 | | 18. | 1.1 1.5 2.6 | 14 30 44 | 567 | 12 25 11 | | 19. | 0.4 1.5 1.8 | 4 26 30 | 474 | 9 15 5 | | 20. | 0.0 1.1 1.1 | 0 18 18 | 336 | 10 18 9 | | 21. | 0.0 1.3 1.3 | 0 17 17 | 204 | 8 20 8 | | 22. | 0.2 1.4 1.6 | 2 18 20 | 99 | 9 20 7 | | 23. | 0.5 1.5 2.0 | 6 25 31 | 223 | 10 23 12 | | 24. | 1.7 1.4 3.1 | 31 18 50 | 343 | 5 10 3 | | 25. | 1.2 1.2 2.5 | 30 21 51 | 753 | 3 7 4 | | 26. | 1.0 1.0 2.1 | 25 18 43 | 719 | 5 10 3 | | 27. | 0.8 1.4 2.1 | 17 19 36 | 445 | 6 11 2 | | 28. | 0.8 2.2 3.1 | 12 34 47 | 267 | 9 20 8 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.6 1.5 2.1 | 9.0 23.9 33.1 | 342 | 9 19 6 | +------+----------------+-------------------+-------+--------------+ | Days | 28 28 28 | 28 28 28 | 28 | | +------+----------------+-------------------+-------+--------------+ Based on 518 observations of 39 stations. Edited by Martin Dillig