Provisional sunspot numbers December 2017 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.3 0.0 0.3 | 3 0 3 | 0 | 3 10 4 | | 02. | 0.0 0.0 0.0 | 0 0 0 | 0 | 2 9 4 | | 03. | 0.0 0.0 0.0 | 0 0 0 | 0 | 1 7 3 | | 04. | 0.0 0.0 0.0 | 0 0 0 | 0 | 3 9 4 | | 05. | 0.0 0.0 0.0 | 0 0 0 | 0 | 3 6 3 | | 06. | 0.5 0.0 0.5 | 6 0 6 | - | 1 4 0 | | 07. | 0.2 0.0 0.2 | 3 0 3 | 1 | 5 11 3 | | 08. | 0.0 0.0 0.0 | 0 0 0 | 0 | 1 7 2 | | 09. | 0.0 0.0 0.0 | 0 0 0 | 0 | 4 12 4 | | 10. | 0.0 0.3 0.3 | 0 3 3 | 1 | 3 7 3 | | 11. | 0.0 0.7 0.7 | 0 8 8 | - | 1 3 0 | | 12. | 0.0 0.3 0.3 | 0 4 4 | 6 | 1 8 2 | | 13. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 11 4 | | 14. | 0.0 0.0 0.0 | 0 0 0 | 0 | 1 8 2 | | 15. | 0.0 0.0 0.0 | 0 0 0 | 0 | 2 8 1 | | 16. | 0.0 0.0 0.0 | 0 0 0 | 0 | 4 17 7 | | 17. | 0.0 0.0 0.0 | 0 0 0 | 0 | 4 13 6 | | 18. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 15 7 | | 19. | 0.3 0.0 0.3 | 4 0 4 | 11 | 3 8 4 | | 20. | 0.8 0.0 0.8 | 11 0 11 | 13 | 1 7 3 | | 21. | 0.7 0.0 0.7 | 15 0 15 | - | 1 3 0 | | 22. | 0.7 0.0 0.7 | 20 0 20 | 372 | 2 9 4 | | 23. | 0.7 0.0 0.7 | 20 0 20 | 304 | 2 7 3 | | 24. | 0.9 0.0 0.9 | 20 0 20 | 300 | 3 6 3 | | 25. | 0.8 0.0 0.8 | 14 0 14 | 179 | 2 5 2 | | 26. | 0.8 0.0 0.8 | 12 0 12 | 77 | 2 11 4 | | 27. | 0.6 0.0 0.6 | 8 0 8 | 11 | 2 7 2 | | 28. | 0.0 0.0 0.0 | 0 0 0 | 0 | 2 12 4 | | 29. | 0.1 0.0 0.1 | 1 0 1 | 0 | 4 11 7 | | 30. | 0.1 0.0 0.1 | 1 0 1 | 0 | 1 5 1 | | 31. | 0.2 0.0 0.2 | 3 0 3 | 8 | 2 8 2 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.3 0.0 0.3 | 4.5 0.5 5.0 | 46 | 2 9 4 | +------+----------------+-------------------+-------+--------------+ | Days | 31 31 31 | 31 31 31 | 28 | | +------+----------------+-------------------+-------+--------------+ Based on 264 observations of 25 stations. Araujo,G. L 80 910 31 Hurbanovo Obs. L1502250 19 Barnes,H. L 76 910 18 Junker,E. L 50 600 6 Battaiola,R. S 901250 5 Kaczmarek,A. L 80 400 5 Beltran,G.V. S2001600 20 Kysucka Obs. L2003000 5 Brauckhoff,D. S2032032 17 Michalovce Obs. L1502250 1 Brettel,G. L 901000 8 Morales,G. S 902000 22 Bruegger,S. L 80 400 6 Rim. Sobota Obs.L1502250 5 Chudy,M. L 60 700 2 Robeck,G. S2032000 4 Daub,K.-P. L1521200 8 Schroeder,G. L 751200 8 Dubois,F. L1252500 17 Seiffert,H.-P. L100 500 6 Fritsche,S. L 63 840 12 Steen,M. L 80 400 4 Hoerenz,M. L 60 700 4 Suzuki,M. L100 0 26 Holl,M. L 80 400 5