Provisional sunspot numbers April 2012 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 1.0 2.2 3.2 | 14 29 43 | 219 | 7 18 8 | | 02. | 1.8 2.2 4.0 | 29 29 58 | 270 | 5 13 6 | | 03. | 1.8 1.8 3.6 | 35 23 58 | 469 | 5 13 4 | | 04. | 1.7 1.1 2.7 | 33 12 45 | 500 | 4 11 5 | | 05. | 2.1 0.1 2.2 | 40 2 42 | 593 | 4 10 5 | | 06. | 2.0 0.1 2.1 | 34 2 36 | 525 | 4 14 6 | | 07. | 1.2 0.0 1.2 | 17 0 17 | 68 | 6 13 6 | | 08. | 1.2 0.0 1.2 | 15 0 15 | 65 | 5 18 9 | | 09. | 0.8 0.0 0.8 | 9 0 9 | 60 | 3 7 2 | | 10. | 0.5 0.3 0.7 | 5 3 8 | 9 | 2 6 2 | | 11. | 0.9 0.6 1.5 | 13 7 20 | 40 | 3 8 3 | | 12. | 1.2 1.4 2.5 | 21 16 37 | 176 | 6 13 5 | | 13. | 1.8 0.6 2.5 | 36 7 43 | 427 | 4 11 5 | | 14. | 2.4 0.4 2.8 | 38 5 43 | 362 | 4 13 6 | | 15. | 2.2 1.5 3.7 | 37 21 58 | 673 | 4 13 6 | | 16. | 1.7 0.9 2.6 | 26 18 44 | 482 | 4 15 5 | | 17. | 2.9 1.0 3.9 | 42 24 66 | 938 | 6 17 7 | | 18. | 1.8 3.0 4.8 | 31 63 94 | 1521 | 5 15 6 | | 19. | 2.1 3.0 5.1 | 39 70 109 | 2458 | 6 18 8 | | 20. | 2.7 3.6 6.4 | 45 82 127 | 2186 | 6 17 7 | | 21. | 1.7 4.2 5.9 | 36 91 127 | 2650 | 5 15 8 | | 22. | 1.6 3.6 5.2 | 36 80 116 | 2249 | 5 17 7 | | 23. | 1.7 3.0 4.8 | 33 75 108 | 2355 | 7 19 8 | | 24. | 3.2 2.0 5.2 | 48 51 99 | 1282 | 5 13 4 | | 25. | 3.1 2.3 5.4 | 47 45 92 | 1064 | 5 13 6 | | 26. | 2.5 2.7 5.2 | 42 42 84 | 1266 | 4 8 4 | | 27. | 2.3 2.4 4.6 | 39 36 75 | 993 | 8 15 8 | | 28. | 2.2 3.1 5.4 | 33 48 81 | 1014 | 6 18 8 | | 29. | 2.1 3.4 5.5 | 28 51 79 | 504 | 5 14 6 | | 30. | 1.5 3.9 5.3 | 19 65 84 | 905 | 6 17 8 | +------+----------------+-------------------+-------+--------------+ | Mean | 1.9 1.8 3.7 | 30.7 33.2 63.9 | 877 | 5 14 6 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 412 observations of 24 stations. Araujo,G. L 80 910 27 Joppich,H. L 60 900 2 Barnes,H. L 76 910 10 Junker,E. L 50 600 11 Battaiola,R. S 901250 2 Kaczmarek,A. L 80 400 8 Beltran,G.V. S2001600 21 Michalovce Obs. L1502250 9 Bruegger,S. L 80 400 22 Moeller,M. L 791000 21 Chudy,M. L 60 700 15 Morales,G. S 902000 28 Dubois,F. L1252500 25 Robeck,G. S2032000 19 Fritsche,S. L 63 840 19 Ruemmler,F. L 801200 12 Hedewig,R. L 801200 23 Schott,G.-L. L 80 910 19 Hoerenz,M. L 60 700 8 Schroeder,G. L 751200 16 Holl,M. L 80 400 23 Suzuki,M. L100 0 21 Hurbanovo Obs. L1502250 26 Van Slooten,B. L 901300 25