Provisional sunspot numbers April 2018 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.0 0.2 0.2 | 0 2 2 | 0 | 3 12 5 | | 02. | 0.0 0.0 0.0 | 0 0 0 | 0 | 4 19 8 | | 03. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 16 6 | | 04. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 21 9 | | 05. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 16 6 | | 06. | 0.0 0.0 0.0 | 0 0 0 | 0 | 4 21 10 | | 07. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 20 10 | | 08. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 20 9 | | 09. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 20 9 | | 10. | 0.0 0.2 0.2 | 0 2 2 | 1 | 7 19 8 | | 11. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 18 9 | | 12. | 0.3 0.1 0.4 | 4 1 5 | 5 | 7 19 8 | | 13. | 0.7 0.0 0.7 | 10 0 10 | 39 | 4 12 7 | | 14. | 0.2 0.0 0.2 | 3 0 3 | 2 | 4 14 5 | | 15. | 0.2 0.0 0.2 | 3 0 3 | 4 | 1 9 4 | | 16. | 0.3 0.0 0.3 | 3 0 3 | 2 | 3 13 6 | | 17. | 0.3 0.1 0.4 | 3 1 4 | 3 | 5 21 9 | | 18. | 0.1 0.0 0.1 | 1 0 1 | 2 | 7 23 12 | | 19. | 0.4 0.1 0.5 | 5 1 6 | 8 | 7 22 10 | | 20. | 0.8 0.0 0.8 | 12 0 12 | 80 | 8 25 12 | | 21. | 0.7 0.2 1.0 | 13 3 16 | 142 | 6 22 10 | | 22. | 0.7 0.1 0.8 | 13 1 14 | 172 | 6 23 10 | | 23. | 0.8 0.0 0.8 | 15 0 15 | 143 | 6 18 7 | | 24. | 0.8 0.0 0.8 | 15 0 15 | 82 | 4 14 8 | | 25. | 0.7 0.1 0.8 | 10 2 12 | 81 | 7 19 9 | | 26. | 0.7 0.0 0.7 | 10 0 10 | 75 | 3 12 3 | | 27. | 0.7 0.0 0.7 | 9 0 9 | 31 | 6 18 9 | | 28. | 0.1 0.0 0.1 | 1 0 1 | 0 | 5 18 7 | | 29. | 0.1 0.0 0.1 | 1 0 1 | 2 | 5 18 7 | | 30. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 17 8 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.3 0.0 0.3 | 4.4 0.4 4.8 | 29 | 5 18 8 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 539 observations of 27 stations. Araujo,G. L 80 910 29 Joppich,H. L 60 900 5 Barnes,H. L 76 910 8 Junker,E. L 50 600 14 Battaiola,R. S 901250 5 Kaczmarek,A. L 80 400 9 Beltran,G.V. S2001600 27 Kysucka Obs. L2003000 19 Brauckhoff,D. S2032032 29 Meister,S. L125 800 19 Broeckels,G. L 57 242 23 Michalovce Obs. L1502250 13 Bruegger,S. L 80 400 23 Morales,G. S 902000 29 Chudy,M. L 60 700 26 Rim. Sobota Obs.L1502250 6 Daub,K.-P. L1521200 19 Robeck,G. S2032000 18 Dubois,F. L1252500 27 Ruemmler,F. L 801200 26 Fritsche,S. L 63 840 24 Schroeder,G. L 751200 23 Hoerenz,M. L 60 700 24 Suzuki,M. L100 0 22 Holl,M. L 80 400 27 Wiley,J. L102 500 17 Hurbanovo Obs. L1502250 28