Provisional sunspot numbers September 2017 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 1.4 1.3 2.8 | 25 19 44 | 618 | 5 12 5 | | 02. | 1.0 1.6 2.6 | 26 20 46 | 981 | 4 14 5 | | 03. | 1.7 1.9 3.6 | 42 39 81 | 2027 | 5 18 6 | | 04. | 1.7 2.0 3.7 | 38 48 86 | 2138 | 8 17 6 | | 05. | 2.4 1.8 4.2 | 48 44 92 | 1979 | 6 13 6 | | 06. | 2.2 0.7 3.0 | 43 30 73 | 2304 | 4 10 4 | | 07. | 2.4 1.0 3.4 | 46 30 76 | 1776 | 5 11 5 | | 08. | 2.7 0.7 3.4 | 45 25 70 | 1086 | 5 8 2 | | 09. | 2.3 0.8 3.0 | 31 15 46 | 707 | 3 10 4 | | 10. | 2.4 0.0 2.4 | 30 0 30 | 404 | 4 14 6 | | 11. | 1.6 0.0 1.6 | 19 0 19 | 138 | 6 16 8 | | 12. | 0.8 0.0 0.8 | 10 0 10 | 90 | 4 13 5 | | 13. | 0.8 0.1 0.9 | 10 1 11 | 85 | 5 12 3 | | 14. | 0.8 0.0 0.8 | 8 0 8 | 57 | 7 13 5 | | 15. | 0.8 0.0 0.8 | 9 0 9 | 131 | 6 16 6 | | 16. | 0.7 0.0 0.7 | 10 0 10 | 144 | 2 6 1 | | 17. | 0.8 0.0 0.8 | 10 0 10 | 163 | 3 9 2 | | 18. | 0.8 0.0 0.8 | 9 0 9 | 105 | 6 15 6 | | 19. | 0.8 0.0 0.8 | 9 0 9 | 86 | 3 12 5 | | 20. | 0.7 0.7 1.4 | 8 8 16 | 66 | 5 10 3 | | 21. | 0.7 0.7 1.5 | 9 8 17 | 137 | 5 14 3 | | 22. | 0.2 0.7 0.9 | 2 8 10 | 74 | 7 14 7 | | 23. | 0.0 0.8 0.8 | 0 10 10 | 134 | 5 13 3 | | 24. | 0.0 1.4 1.4 | 0 17 17 | 209 | 2 8 1 | | 25. | 0.8 1.5 2.3 | 10 18 28 | 255 | 7 12 4 | | 26. | 0.7 1.5 2.2 | 9 20 29 | 313 | 7 12 4 | | 27. | 0.8 1.7 2.5 | 9 21 30 | 233 | 8 16 6 | | 28. | 0.8 1.5 2.3 | 9 23 32 | 227 | 5 9 3 | | 29. | 0.7 1.6 2.3 | 9 22 31 | 297 | 8 15 7 | | 30. | 0.7 1.7 2.4 | 9 22 31 | 284 | 3 9 3 | +------+----------------+-------------------+-------+--------------+ | Mean | 1.1 0.9 2.0 | 18.1 14.9 33.0 | 575 | 5 12 4 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 371 observations of 23 stations. Araujo,G. L 80 910 30 Kaczmarek,A. L 80 400 6 Barnes,H. L 76 910 6 Kysucka Obs. L2003000 13 Beltran,G.V. S2001600 25 Michalovce Obs. L1502250 12 Bruegger,S. L 80 400 17 Morales,G. S 902000 28 Chudy,M. L 60 700 11 Rim. Sobota Obs.L1502250 18 Daub,K.-P. L1521200 17 Robeck,G. S2032000 17 Dubois,F. L1252500 9 Ruemmler,F. L 801200 17 Fritsche,S. L 63 840 24 Schroeder,G. L 751200 23 Hoerenz,M. L 60 700 19 Suzuki,M. L100 0 22 Holl,M. L 80 400 15 Tiendesprong ObsL 751200 13 Hurbanovo Obs. L1502250 18 Willi,X. S2001320 8 Junker,E. L 50 600 3