Provisional sunspot numbers February 1999 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 1. | 1.5 0.8 2.3 | 18 9 28 | 106 | 1 2 2 | | 2. | 1.2 0.4 1.6 | 15 7 22 | 55 | 1 2 1 | | 3. | 0.0 1.2 1.2 | 0 21 21 | 98 | 2 3 1 | | 4. | 0.0 0.8 0.8 | 0 18 18 | 117 | 2 3 1 | | 5. | 0.0 0.9 0.9 | 0 13 13 | 44 | 5 13 3 | | 6. | 0.0 1.6 1.6 | 0 21 21 | 126 | 5 11 5 | | 7. | 0.4 1.5 1.9 | 5 18 23 | 38 | 5 11 3 | | 8. | 1.2 1.9 3.0 | 16 22 38 | 249 | 5 8 2 | | 9. | 1.6 1.3 2.8 | 25 16 40 | 389 | 3 9 3 | | 10. | 2.3 1.9 4.2 | 43 27 71 | 1183 | 5 8 2 | | 11. | 2.0 2.8 4.8 | 45 36 81 | 1007 | 6 12 3 | | 12. | 3.2 2.6 5.9 | 69 37 106 | 1847 | 8 19 6 | | 13. | 3.0 3.0 6.1 | 77 43 121 | 2426 | 5 10 4 | | 14. | 3.9 3.3 7.2 | 82 52 134 | 1657 | 3 9 4 | | 15. | 3.6 3.6 7.2 | 70 66 137 | 2600 | 6 11 4 | | 16. | 3.9 3.5 7.5 | 72 57 128 | 1680 | 5 9 3 | | 17. | 3.7 3.8 7.5 | 64 59 123 | 1452 | 5 10 3 | | 18. | 3.4 3.0 6.4 | 54 44 98 | 1228 | 4 9 4 | | 19. | 3.4 2.4 5.8 | 48 34 83 | 780 | 1 3 1 | | 20. | 3.8 2.3 6.1 | 53 31 85 | 475 | 5 11 1 | | 21. | 3.8 2.3 6.1 | 53 27 80 | 407 | 2 4 2 | | 22. | 2.6 0.9 3.4 | 34 10 43 | 195 | 6 9 2 | | 23. | 2.0 1.0 3.0 | 26 14 40 | 299 | 5 10 3 | | 24. | 1.8 0.8 2.6 | 25 11 36 | 182 | 4 10 3 | | 25. | 1.9 0.7 2.6 | 29 12 41 | 309 | 4 10 3 | | 26. | 1.9 0.7 2.6 | 31 10 41 | 325 | 3 7 3 | | 27. | 2.2 1.3 3.6 | 41 16 57 | 583 | 8 16 5 | | 28. | 2.8 1.2 4.0 | 53 14 68 | 544 | 10 19 7 | +------+----------------+-------------------+-------+--------------+ | Mean | 2.2 1.8 4.0 | 37.4 26.6 64.2 | 729 | 4 9 3 | +------+----------------+-------------------+-------+--------------+ | Days | 28 28 28 | 28 28 28 | 28 | | +------+----------------+-------------------+-------+--------------+ Based on 258 observations of 24 stations. Edited by Martin Dillig