Provisional sunspot numbers April 2005 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.7 0.4 1.1 | 8 5 13 | 34 | 10 22 9 | | 02. | 0.7 1.1 1.8 | 9 17 26 | 149 | 8 22 9 | | 03. | 0.7 1.5 2.2 | 8 24 32 | 299 | 10 22 11 | | 04. | 0.7 1.6 2.3 | 8 30 38 | 481 | 10 20 9 | | 05. | 0.8 1.8 2.6 | 9 33 41 | 442 | 8 17 9 | | 06. | 0.1 2.3 2.3 | 1 32 33 | 265 | 8 18 9 | | 07. | 0.1 2.1 2.2 | 1 29 30 | 249 | 9 17 9 | | 08. | 0.1 1.9 2.0 | 1 26 27 | 181 | 9 15 6 | | 09. | 0.0 2.3 2.3 | 0 32 32 | 272 | 5 11 6 | | 10. | 0.0 1.8 1.8 | 0 25 25 | 170 | 2 12 4 | | 11. | 0.0 1.1 1.1 | 0 17 17 | 106 | 9 19 7 | | 12. | 0.6 1.2 1.8 | 8 18 27 | 252 | 6 16 9 | | 13. | 1.4 1.0 2.4 | 20 13 32 | 207 | 6 14 6 | | 14. | 1.2 1.6 2.9 | 20 21 41 | 290 | 7 15 7 | | 15. | 1.3 1.4 2.7 | 18 19 37 | 219 | 8 19 7 | | 16. | 0.8 1.4 2.2 | 13 19 32 | 265 | 9 16 6 | | 17. | 0.7 1.7 2.4 | 12 21 33 | 199 | 5 12 5 | | 18. | 0.7 1.5 2.2 | 12 18 30 | 137 | 6 10 4 | | 19. | 0.7 1.3 2.0 | 11 15 26 | 119 | 7 13 6 | | 20. | 0.7 1.4 2.1 | 8 18 27 | 104 | 8 19 7 | | 21. | 0.7 1.0 1.7 | 8 12 20 | 73 | 10 25 9 | | 22. | 0.6 0.8 1.4 | 6 10 16 | 55 | 10 20 8 | | 23. | 0.5 0.8 1.3 | 6 10 15 | 57 | 7 15 8 | | 24. | 0.2 0.2 0.5 | 3 3 6 | 18 | 7 17 8 | | 25. | 0.0 0.7 0.7 | 0 9 9 | 137 | 5 11 6 | | 26. | 0.2 0.7 1.0 | 4 12 16 | 324 | 7 18 9 | | 27. | 0.5 0.8 1.3 | 7 16 23 | 549 | 9 16 6 | | 28. | 0.1 1.6 1.7 | 2 33 35 | 1056 | 10 23 9 | | 29. | 0.1 2.0 2.2 | 2 38 40 | 963 | 7 13 5 | | 30. | 0.0 1.8 1.8 | 0 40 40 | 1226 | 7 18 7 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.5 1.4 1.9 | 6.8 20.5 27.3 | 297 | 8 17 7 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 505 observations of 30 stations. Araujo,G. L 80 910 24 Kaczmarek,A. L 80 400 9 Barnes,H. L 76 910 17 Kandilli Obs. L2003070 21 Battaiola,R. S 901250 11 Michalovce Obs. L1502250 12 Beltran,G.V. S2001600 18 Moeller,M. L 791000 25 Broeckels,G. L1201000 22 Morales,G. S 902000 28 Capricornio Obs.L1021500 16 Rim. Sobota Obs.L1502250 24 Fritsche,S. L 63 840 21 Robeck,G. S2032000 23 Gahsche,C.-D. L 751200 16 Ruemmler,F. L 801200 17 Goetz,M. S1001000 13 Schott,G.-L. L 80 910 19 Hickmann,R. L 60 700 18 Schroeder,G. L 751200 20 Hofmann,W. L 80 400 8 Schulze,W. L 63 840 12 Holl,M. L 80 400 20 Strickling,W. S1501200 3 Hurbanovo Obs. L1502250 26 Suzuki,M. L100 0 25 John,J. S1501200 8 WFS,Berlin L1502250 18 Joppich,H. L 60 900 6 Willi,X. S2001320 5