Provisional sunspot numbers May 1999 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 1. | 3.3 0.7 4.1 | 62 8 71 | 981 | 8 17 5 | | 2. | 3.7 1.1 4.9 | 65 16 80 | 1043 | 7 18 6 | | 3. | 3.8 0.8 4.6 | 62 9 71 | 773 | 8 18 6 | | 4. | 3.7 0.7 4.3 | 55 10 65 | 557 | 5 11 2 | | 5. | 3.6 1.5 5.2 | 53 19 72 | 367 | 7 12 3 | | 6. | 4.6 1.7 6.3 | 64 22 87 | 727 | 1 3 2 | | 7. | 5.7 2.8 8.4 | 90 36 127 | 1012 | 6 16 5 | | 8. | 7.0 2.5 9.5 | 105 43 148 | - | 3 6 0 | | 9. | 6.3 2.5 8.8 | 100 50 150 | 1857 | 7 15 5 | | 10. | 4.7 2.6 7.3 | 76 58 134 | 1712 | 7 12 4 | | 11. | 3.5 3.3 6.8 | 60 61 121 | 1507 | 7 11 4 | | 12. | 2.8 3.3 6.1 | 53 59 112 | 994 | 5 11 2 | | 13. | 2.9 2.5 5.4 | 52 41 93 | 1189 | 4 10 2 | | 14. | 2.8 2.9 5.7 | 51 46 97 | 1082 | 5 9 1 | | 15. | 3.6 2.7 6.3 | 61 41 102 | 929 | 6 12 2 | | 16. | 3.7 2.2 6.0 | 57 41 97 | 675 | 2 9 2 | | 17. | 2.7 3.1 5.8 | 45 45 90 | 1014 | 8 17 4 | | 18. | 3.3 2.8 6.1 | 46 52 98 | 1135 | 7 16 4 | | 19. | 2.5 2.6 5.1 | 33 53 85 | 743 | 5 12 3 | | 20. | 2.2 3.8 6.0 | 31 65 96 | 837 | 7 17 4 | | 21. | 2.4 3.7 6.1 | 37 66 102 | 1122 | 3 10 2 | | 22. | 2.4 3.2 5.5 | 32 67 99 | 1581 | 3 7 1 | | 23. | 1.9 3.5 5.4 | 24 64 88 | 1009 | 8 17 5 | | 24. | 2.9 2.9 5.8 | 37 50 87 | 939 | 4 10 3 | | 25. | 3.2 2.5 5.7 | 43 42 85 | 941 | 4 9 2 | | 26. | 4.3 2.0 6.3 | 62 37 99 | 845 | 7 16 6 | | 27. | 4.3 2.7 6.9 | 62 41 103 | 952 | 8 17 5 | | 28. | 4.3 2.4 6.7 | 65 35 100 | 1096 | 7 15 4 | | 29. | 4.9 1.6 6.5 | 78 26 104 | 1265 | 9 19 7 | | 30. | 3.6 2.0 5.6 | 66 29 95 | 1139 | 8 17 8 | | 31. | 3.6 2.7 6.3 | 64 46 110 | 1254 | 4 13 4 | +------+----------------+-------------------+-------+--------------+ | Mean | 3.7 2.4 6.1 | 57.8 41.2 99.0 | 1043 | 6 13 4 | +------+----------------+-------------------+-------+--------------+ | Days | 31 31 31 | 31 31 31 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 402 observations of 22 stations. Edited by Martin Dillig