Provisional sunspot numbers April 2022 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | - - 4.9 | - - 94 | 2259 | 0 4 1 | | 02. | 2.0 2.3 4.3 | 34 43 77 | 1144 | 2 11 4 | | 03. | 2.0 2.7 4.7 | 24 49 73 | 796 | 3 16 6 | | 04. | 1.4 2.4 3.8 | 15 42 57 | 656 | 3 11 5 | | 05. | 1.4 2.8 4.2 | 12 47 59 | 519 | 1 5 1 | | 06. | 1.4 2.4 3.8 | 16 35 51 | 597 | 3 10 4 | | 07. | 0.2 2.8 3.0 | 2 37 39 | 211 | 4 14 6 | | 08. | 0.7 2.3 3.0 | 8 30 38 | 186 | 4 13 4 | | 09. | 0.9 1.3 2.2 | 11 17 28 | 124 | 2 14 6 | | 10. | 1.1 0.2 1.2 | 13 2 15 | 38 | 4 14 6 | | 11. | 0.7 0.1 0.8 | 8 1 9 | 16 | 6 23 9 | | 12. | 1.0 0.0 1.0 | 12 0 12 | 32 | 6 21 8 | | 13. | 1.6 0.4 2.0 | 19 4 23 | 52 | 5 18 8 | | 14. | 1.6 0.8 2.3 | 20 8 28 | 136 | 4 19 7 | | 15. | 1.6 0.8 2.4 | 21 9 30 | 204 | 1 7 3 | | 16. | 2.9 0.9 3.8 | 33 10 43 | 276 | 4 18 6 | | 17. | 2.5 1.6 4.2 | 36 21 57 | 476 | 4 22 9 | | 18. | 2.5 2.2 4.7 | 43 25 68 | 773 | 4 24 9 | | 19. | 3.0 1.0 4.1 | 53 11 64 | 1032 | 5 20 7 | | 20. | 3.3 0.7 4.0 | 61 7 68 | 1348 | 5 18 8 | | 21. | 3.2 0.7 3.9 | 66 9 75 | 1804 | 4 13 6 | | 22. | 3.8 0.7 4.5 | 67 9 76 | 1432 | 4 16 4 | | 23. | 3.1 2.0 5.1 | 56 26 82 | 1150 | 5 19 7 | | 24. | 3.9 1.6 5.5 | 70 16 86 | 1209 | 3 16 8 | | 25. | 3.9 0.9 4.8 | 67 10 77 | 1024 | 5 16 7 | | 26. | 3.7 2.2 5.9 | 60 23 83 | 1022 | 5 17 7 | | 27. | 4.4 2.7 7.0 | 60 30 90 | 784 | 3 18 6 | | 28. | 3.9 2.7 6.6 | 56 31 87 | 851 | 4 21 8 | | 29. | 2.5 3.0 5.5 | 30 38 68 | 396 | 6 20 9 | | 30. | 1.3 1.6 2.9 | 16 21 37 | 232 | 3 16 7 | +------+----------------+-------------------+-------+--------------+ | Mean | 2.3 1.6 3.9 | 34.1 21.1 56.5 | 693 | 4 16 6 | +------+----------------+-------------------+-------+--------------+ | Days | 29 29 30 | 29 29 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 474 observations of 28 stations. Alteholz,T. L 80 0 9 Husar,D. (vis.) L115 0 3 Araujo,G. L 80 910 28 Junker,E. L 50 600 13 Barsch,T. L1021000 26 Kaczmarek,A. L 80 400 7 Beltran,G.V. S2001600 29 Kysucka Obs. L2003000 14 Brettel,G. L 901000 21 Maluf,W. L1021500 25 Bronst,M. L102 0 23 Meister,S. L125 800 15 Bruegger,S. L 80 400 25 Michalovce Obs. L1502250 7 Chudy,M. L 60 700 11 Moeller,M. S 0 0 30 Daub,K.-P. L1521200 19 Rockmann,K. L 901200 16 Fritsche,S. L 63 840 17 Ruemmler,F. L 801200 20 Hoerenz,M. L 60 700 14 Schroeder,G. S 0 0 30 Holl,M. L 80 400 21 Seiffert,H.-P. L100 500 12 Hurbanovo Obs. L1502250 24 Selbmann,U. L 63 840 5 Husar,D. L115 0 3 Stoyan,R. L 50 540 7