Provisional sunspot numbers December 1998 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 1. | 5.1 1.3 6.4 | 82 20 102 | - | 3 4 0 | | 2. | 5.9 1.1 7.0 | 83 13 95 | 564 | 3 7 1 | | 3. | 5.6 0.8 6.4 | 83 8 91 | 559 | 1 4 1 | | 4. | 4.4 0.7 5.2 | 70 9 80 | - | 2 3 0 | | 5. | 4.4 0.7 5.2 | 63 9 72 | - | 1 2 0 | | 6. | 4.5 2.1 6.7 | 60 30 89 | 656 | 6 6 1 | | 7. | 4.6 2.6 7.2 | 63 46 109 | 1061 | 6 10 3 | | 8. | 3.8 3.5 7.3 | 51 67 118 | 1228 | 4 10 5 | | 9. | 3.2 3.4 6.6 | 41 65 106 | 1007 | 5 11 1 | | 10. | 2.8 4.0 6.9 | 33 70 103 | 914 | 5 11 4 | | 11. | 2.7 3.8 6.5 | 31 65 96 | 869 | 5 12 5 | | 12. | 2.0 4.4 6.5 | 21 80 102 | 825 | 2 3 1 | | 13. | 1.6 4.2 5.8 | 17 74 91 | 824 | 5 11 3 | | 14. | 1.0 3.9 4.9 | 10 76 86 | 772 | 4 7 2 | | 15. | 1.3 3.6 4.9 | 14 66 80 | 911 | 2 8 1 | | 16. | 1.4 2.3 3.6 | 16 49 64 | 953 | 3 9 2 | | 17. | 0.9 2.0 2.9 | 11 37 48 | 659 | 10 19 9 | | 18. | 1.5 2.1 3.6 | 27 32 59 | 515 | 4 10 2 | | 19. | 1.6 1.3 2.9 | 30 19 49 | 574 | 7 12 3 | | 20. | 2.4 1.1 3.5 | 40 12 53 | 543 | 6 15 7 | | 21. | 2.4 0.5 2.9 | 41 5 46 | 502 | 6 14 5 | | 22. | 2.4 0.0 2.4 | 38 0 38 | 168 | 4 7 2 | | 23. | 3.2 0.0 3.2 | 45 0 45 | 308 | 10 15 4 | | 24. | 3.6 0.7 4.3 | 50 8 58 | 177 | 3 4 2 | | 25. | 3.4 0.6 4.0 | 51 11 62 | 778 | 2 7 1 | | 26. | 3.6 1.1 4.7 | 60 19 78 | 815 | 8 19 10 | | 27. | 4.0 0.9 4.9 | 84 20 104 | 1419 | 6 9 4 | | 28. | 3.6 1.3 5.0 | 87 26 113 | 1994 | 8 13 3 | | 29. | 2.8 0.7 3.5 | 75 16 92 | 2065 | 10 19 8 | | 30. | 3.1 1.4 4.5 | 75 21 95 | 1913 | 12 22 10 | | 31. | 3.6 1.0 4.5 | 78 15 94 | 1802 | 12 21 8 | +------+----------------+-------------------+-------+--------------+ | Mean | 3.1 1.8 5.0 | 49.4 31.9 81.2 | 906 | 5 10 3 | +------+----------------+-------------------+-------+--------------+ | Days | 31 31 31 | 31 31 31 | 28 | | +------+----------------+-------------------+-------+--------------+ Based on 324 observations of 32 stations. Edited by Martin Dillig