Provisional sunspot numbers May 2021 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.0 0.6 0.6 | 0 7 7 | 29 | 5 17 8 | | 02. | 0.0 0.0 0.0 | 0 0 0 | 0 | 4 17 7 | | 03. | 0.0 0.0 0.0 | 1 0 1 | 0 | 8 24 13 | | 04. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 15 7 | | 05. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 17 7 | | 06. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 20 10 | | 07. | 0.7 0.0 0.7 | 8 0 8 | 42 | 4 19 9 | | 08. | 0.7 0.0 0.7 | 11 0 11 | 102 | 6 23 9 | | 09. | 0.8 0.1 0.9 | 14 1 15 | 210 | 7 24 11 | | 10. | 0.7 0.7 1.4 | 14 8 22 | 309 | 8 21 10 | | 11. | 0.8 0.8 1.5 | 13 10 23 | 314 | 6 14 8 | | 12. | 0.7 0.7 1.5 | 15 8 23 | 289 | 3 9 4 | | 13. | 0.8 0.8 1.6 | 12 9 21 | 142 | 2 8 2 | | 14. | 0.7 0.7 1.4 | 11 7 18 | 158 | 2 10 3 | | 15. | 1.1 0.5 1.6 | 13 6 19 | 113 | 5 17 8 | | 16. | 0.9 0.0 0.9 | 10 0 10 | 56 | 6 20 11 | | 17. | 0.8 0.0 0.8 | 9 0 9 | 59 | 4 18 10 | | 18. | 1.8 0.0 1.8 | 20 0 20 | 113 | 6 21 10 | | 19. | 1.5 0.0 1.5 | 17 0 17 | 132 | 7 22 11 | | 20. | 0.8 0.3 1.1 | 10 3 13 | 126 | 8 21 11 | | 21. | 0.7 0.1 0.8 | 9 1 10 | 175 | 9 21 12 | | 22. | 1.0 0.0 1.0 | 14 0 14 | 154 | 3 13 5 | | 23. | 1.4 0.0 1.4 | 19 0 19 | 329 | 7 19 9 | | 24. | 1.7 0.0 1.7 | 24 0 24 | 241 | 6 23 11 | | 25. | 1.7 0.0 1.7 | 27 0 27 | 349 | 6 17 9 | | 26. | 1.5 0.0 1.5 | 29 0 29 | 488 | 7 19 11 | | 27. | 1.6 0.0 1.6 | 26 0 26 | 318 | 5 11 6 | | 28. | 1.6 0.0 1.6 | 21 0 21 | 214 | 7 22 11 | | 29. | 0.9 0.0 0.9 | 10 0 10 | 215 | 8 23 10 | | 30. | 1.0 0.2 1.2 | 14 3 17 | 93 | 8 25 11 | | 31. | 0.7 0.6 1.3 | 13 7 20 | 128 | 10 27 14 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.8 0.2 1.0 | 12.4 2.3 14.6 | 158 | 6 19 9 | +------+----------------+-------------------+-------+--------------+ | Days | 31 31 31 | 31 31 31 | 31 | | +------+----------------+-------------------+-------+--------------+ Based on 577 observations of 30 stations. Araujo,G. L 80 910 31 Joppich,H. L 60 900 6 Barnes,H. L 76 910 14 Kaczmarek,A. L 80 400 4 Barsch,T. L1021000 24 Kysucka Obs. L2003000 15 Battaiola,R. S 901250 12 Meister,S. L125 800 26 Beltran,G.V. S2001600 31 Michalovce Obs. L1502250 14 Brettel,G. L 901000 22 Morales,G. S 902000 28 Broeckels,G. L 57 242 22 Rim. Sobota Obs.L1502250 15 Broeckels,G. L1521200 22 Rockmann,K. L 901200 26 Bruegger,S. L 80 400 23 Ruemmler,F. L 801200 24 Chudy,M. L 60 700 12 Schroeder,G. L 751200 14 Daub,K.-P. L1521200 20 Seiffert,H.-P. L100 500 16 Fritsche,S. L 63 840 21 Selbmann,U. L 63 840 10 Hoerenz,M. L 60 700 27 Suzuki,M. L100 0 17 Holl,M. L 80 400 24 Tiendesprong ObsL 751200 17 Hurbanovo Obs. L1502250 25 Wallian,D. L120 900 15