Provisional sunspot numbers April 2007 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.3 0.0 0.3 | 4 0 4 | 5 | 13 27 13 | | 02. | 0.0 0.0 0.0 | 1 0 1 | 1 | 12 29 14 | | 03. | 0.1 0.0 0.1 | 1 0 1 | 0 | 8 21 10 | | 04. | 0.0 0.0 0.0 | 0 0 0 | 0 | 12 25 12 | | 05. | 0.0 0.0 0.0 | 0 0 0 | 0 | 7 24 13 | | 06. | 0.0 0.0 0.0 | 0 0 0 | 0 | 9 26 12 | | 07. | 0.0 0.0 0.0 | 0 0 0 | 0 | 9 28 14 | | 08. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 21 10 | | 09. | 0.0 0.0 0.0 | 0 0 0 | 0 | 9 24 12 | | 10. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 22 10 | | 11. | 0.0 0.0 0.0 | 0 0 0 | 0 | 11 25 12 | | 12. | 0.0 0.0 0.0 | 0 0 0 | 0 | 12 25 11 | | 13. | 0.0 0.1 0.1 | 0 1 1 | 0 | 13 25 11 | | 14. | 0.0 0.1 0.1 | 0 1 1 | 1 | 11 23 11 | | 15. | 0.0 0.0 0.0 | 0 0 0 | 0 | 14 32 14 | | 16. | 0.0 0.0 0.0 | 0 0 0 | 0 | 12 29 13 | | 17. | 0.0 0.2 0.2 | 0 2 2 | 2 | 9 25 11 | | 18. | 0.0 0.0 0.0 | 0 0 0 | 0 | 8 21 7 | | 19. | 0.0 0.0 0.0 | 0 0 0 | 0 | 12 29 13 | | 20. | 0.0 0.0 0.0 | 0 0 0 | 0 | 10 26 12 | | 21. | 0.0 0.0 0.0 | 0 0 0 | 0 | 12 30 15 | | 22. | 0.0 0.0 0.0 | 0 1 1 | 0 | 12 29 11 | | 23. | 0.0 0.0 0.0 | 0 0 0 | 0 | 10 26 13 | | 24. | 0.0 0.0 0.0 | 0 0 0 | 0 | 6 16 8 | | 25. | 0.0 0.8 0.8 | 0 10 10 | 93 | 12 32 14 | | 26. | 0.0 0.8 0.8 | 0 13 13 | 352 | 13 30 15 | | 27. | 0.0 0.8 0.8 | 0 13 13 | 370 | 13 28 13 | | 28. | 0.0 0.8 0.8 | 0 17 17 | 561 | 13 28 13 | | 29. | 0.0 1.2 1.2 | 0 19 19 | 498 | 13 30 14 | | 30. | 0.0 1.5 1.5 | 0 25 25 | 494 | 11 28 11 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.0 0.2 0.2 | 0.2 3.4 3.6 | 79 | 11 26 12 | +------+----------------+-------------------+-------+--------------+ | Days | 30 30 30 | 30 30 30 | 30 | | +------+----------------+-------------------+-------+--------------+ Based on 784 observations of 38 stations. Araujo,G. L 80 910 30 Kaczmarek,A. L 80 400 8 Barnes,H. L 76 910 13 Kandilli Obs. L2003070 28 Battaiola,R. S 901250 14 Kysucka Obs. L2003000 26 Beltran,G.V. S2001600 23 Michalovce Obs. L1502250 14 Bretschneider,H.L 63 840 26 Moeller,M. L 791000 25 Bulling,A. S 701000 20 Morales,G. S 902000 26 Capricornio Obs.L1021500 16 Rim. Sobota Obs.L1502250 28 Chudy,M. L 60 700 26 Robeck,G. S2032000 27 DKS Eriskirch L1521824 1 Ruemmler,F. L 801200 22 Fritsche,S. L 63 840 12 Schott,G.-L. L 80 910 25 Gahsche,C.-D. L 751200 14 Schroeder,G. L 751200 19 Goetz,M. S1001000 13 Schulze,W. L 63 840 19 Hesse,A. L1001000 27 Smit,F. S 801200 27 Hickmann,R. L 60 700 28 Strickling,W. S1501200 5 Hoerenz,M. L 60 700 25 Suzuki,M. L100 0 22 Holl,M. L 80 400 30 Tiendesprong ObsL 751200 28 Hurbanovo Obs. L1502250 30 Van Slooten,B. L 901300 30 Joppich,H. L 60 900 13 WFS,Berlin L1502250 14 Junker,E. L 50 600 24 Willi,X. S2001320 6