Provisional sunspot numbers April 2013 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 2.4 2.5 4.9 | 29 36 65 | 561 | 7 20 8 | | 02. | 3.3 2.5 5.7 | 44 34 78 | 870 | 5 17 8 | | 03. | 3.2 2.4 5.7 | 40 35 75 | 803 | 3 12 5 | | 04. | 3.2 1.7 4.9 | 42 29 71 | 896 | 4 12 6 | | 05. | 3.0 3.0 6.1 | 48 41 89 | - | 1 4 0 | | 06. | 4.7 1.9 6.6 | 68 23 91 | 744 | 3 11 7 | | 07. | 4.2 2.0 6.1 | 68 24 92 | 761 | 6 19 9 | | 08. | 4.2 1.9 6.1 | 73 24 97 | 1072 | 7 21 10 | | 09. | 3.7 2.9 6.6 | 75 32 107 | 1345 | 5 13 6 | | 10. | 2.9 3.0 5.9 | 68 39 107 | 2081 | 4 9 3 | | 11. | 2.7 2.7 5.4 | 63 37 100 | 1424 | 3 12 4 | | 12. | 2.4 2.0 4.4 | 55 33 88 | 1497 | 5 16 7 | | 13. | 2.8 2.4 5.2 | 55 36 91 | 1386 | 3 11 4 | | 14. | 2.7 3.0 5.7 | 41 49 90 | 1111 | 5 16 7 | | 15. | 1.6 3.3 4.9 | 22 55 77 | 725 | 7 19 8 | | 16. | 0.9 4.0 4.9 | 11 72 83 | 1217 | 7 14 4 | | 17. | 0.9 3.8 4.7 | 12 67 79 | 1090 | 6 15 7 | | 18. | 0.6 3.9 4.5 | 7 64 71 | 865 | 7 18 8 | | 19. | 1.0 3.9 4.9 | 12 54 66 | 425 | 5 17 8 | | 20. | 2.4 2.2 4.6 | 47 27 74 | 918 | 5 17 8 | | 21. | 2.3 1.5 3.8 | 58 16 74 | 1639 | 5 17 7 | | 22. | 1.7 1.7 3.4 | 50 19 69 | 1685 | 7 20 8 | | 23. | 2.7 1.3 4.0 | 52 16 68 | 1863 | 5 12 5 | | 24. | 3.1 1.4 4.5 | 57 18 75 | 1505 | 7 22 10 | | 25. | 4.1 1.6 5.7 | 63 22 85 | 1295 | 6 21 9 | | 26. | 4.2 1.8 6.0 | 63 24 87 | 1372 | 6 15 5 | | 27. | 3.1 2.1 5.2 | 47 36 83 | 1058 | 4 10 4 | | 28. | 2.0 2.6 4.6 | 41 42 83 | 1215 | 5 16 8 | | 29. | 1.9 3.4 5.4 | 49 62 111 | 2643 | 5 14 6 | | 30. | 1.6 3.7 5.3 | 43 68 111 | 2518 | 5 16 9 | +------+----------------+-------------------+-------+--------------+ | Mean | 2.7 2.5 5.2 | 46.8 37.8 84.6 | 1262 | 5 15 7 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 29 | | +------+----------------+-------------------+-------+--------------+ Based on 456 observations of 26 stations. Araujo,G. L 80 910 30 Junker,E. L 50 600 10 Barnes,H. L 76 910 7 Kaczmarek,A. L 80 400 7 Battaiola,R. S 901250 3 Kysucka Obs. L2003000 14 Beltran,G.V. S2001600 25 Michalovce Obs. L1502250 12 Bruegger,S. L 80 400 19 Moeller,M. L 791000 23 Chudy,M. L 60 700 15 Morales,G. S 902000 30 Dubois,F. L1252500 26 Rim. Sobota Obs.L1502250 18 Fritsche,S. L 63 840 21 Robeck,G. S2032000 15 Hedewig,R. L 801200 21 Ruemmler,F. L 801200 14 Hoerenz,M. L 60 700 16 Schott,G.-L. L 80 910 26 Holl,M. L 80 400 20 Schroeder,G. L 751200 17 Hurbanovo Obs. L1502250 27 Suzuki,M. L100 0 25 Joppich,H. L 60 900 2 Tiendesprong ObsL 751200 13