Provisional sunspot numbers April 2020 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.6 0.0 0.6 | 8 0 8 | 36 | 6 18 8 | | 02. | 0.8 0.0 0.8 | 10 0 10 | 50 | 7 23 9 | | 03. | 0.7 0.0 0.7 | 9 0 9 | 45 | 7 22 11 | | 04. | 0.7 0.0 0.7 | 8 0 8 | 27 | 7 24 10 | | 05. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 21 9 | | 06. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 24 11 | | 07. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 22 10 | | 08. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 21 9 | | 09. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 22 9 | | 10. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 24 10 | | 11. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 23 10 | | 12. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 21 10 | | 13. | 0.0 0.0 0.0 | 0 0 0 | 0 | 5 18 7 | | 14. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 20 8 | | 15. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 25 11 | | 16. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 21 9 | | 17. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 22 11 | | 18. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 21 9 | | 19. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 21 9 | | 20. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 21 10 | | 21. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 25 11 | | 22. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 21 8 | | 23. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 23 11 | | 24. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 24 10 | | 25. | 0.0 0.2 0.2 | 0 2 2 | 2 | 7 22 11 | | 26. | 0.1 0.6 0.7 | 1 8 9 | 20 | 7 22 11 | | 27. | 0.0 1.3 1.3 | 0 18 18 | 44 | 6 22 10 | | 28. | 0.0 0.8 0.8 | 0 10 10 | 26 | 6 21 9 | | 29. | 0.5 0.5 1.0 | 6 6 12 | 30 | 4 13 6 | | 30. | 0.5 0.7 1.1 | 6 8 14 | 23 | 8 22 10 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.1 0.1 0.3 | 1.6 1.7 3.3 | 10 | 7 22 10 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 649 observations of 27 stations. Araujo,G. L 80 910 28 Kaczmarek,A. L 80 400 11 Barnes,H. L 76 910 14 Kysucka Obs. L2003000 27 Beltran,G.V. S2001600 30 Meister,S. L125 800 13 Broeckels,G. L 57 242 27 Michalovce Obs. L1502250 20 Broeckels,G. L1521200 27 Morales,G. S 902000 28 Bruegger,S. L 80 400 28 Rockmann,K. L 901200 30 Chudy,M. L 60 700 28 Rothermel,J. L1001650 26 Daub,K.-P. L1521200 28 Ruemmler,F. L 801200 29 Fritsche,S. L 63 840 29 Schroeder,G. L 751200 28 Hoerenz,M. L 60 700 30 Seiffert,H.-P. L100 500 25 Holl,M. L 80 400 1 Selbmann,U. L 63 840 18 Hurbanovo Obs. L1502250 30 Suzuki,M. L100 0 25 Joppich,H. L 60 900 17 Tiendesprong ObsL 751200 28 Junker,E. L 50 600 24