Provisional sunspot numbers February 2004 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 1.1 1.8 2.9 | 19 29 48 | 349 | 5 11 2 | | 02. | 0.9 3.4 4.3 | 20 51 71 | 529 | 1 4 1 | | 03. | 0.7 3.5 4.2 | 17 53 70 | 750 | 4 7 2 | | 04. | 0.6 3.1 3.8 | 20 46 66 | 579 | 2 5 1 | | 05. | 0.7 3.2 3.9 | 21 49 69 | 1190 | 4 6 2 | | 06. | 0.8 1.7 2.5 | 22 30 53 | 886 | 5 6 2 | | 07. | 0.7 1.1 1.8 | 20 25 45 | 737 | 4 7 3 | | 08. | 1.0 1.7 2.7 | 19 37 56 | 679 | 6 13 5 | | 09. | 1.0 2.0 3.0 | 17 40 57 | 728 | 9 16 7 | | 10. | 1.5 2.1 3.5 | 19 39 58 | 540 | 5 8 3 | | 11. | 1.0 2.2 3.2 | 14 35 50 | 446 | 5 10 5 | | 12. | 0.8 2.6 3.4 | 15 34 49 | 307 | 3 8 4 | | 13. | 0.7 2.7 3.5 | 12 34 46 | 215 | 4 8 3 | | 14. | 1.6 2.0 3.6 | 21 26 47 | 210 | 3 5 3 | | 15. | 1.9 2.3 4.2 | 24 30 55 | 196 | 4 11 5 | | 16. | 1.7 1.3 3.0 | 19 15 34 | 165 | 5 9 3 | | 17. | 1.5 0.8 2.3 | 17 9 27 | 78 | 4 9 2 | | 18. | 1.5 0.8 2.3 | 18 8 26 | 107 | 8 11 5 | | 19. | 0.9 1.0 1.8 | 10 11 20 | 135 | 9 12 5 | | 20. | 0.6 1.3 1.9 | 7 15 22 | 153 | 8 16 6 | | 21. | 1.1 1.3 2.4 | 15 15 30 | 207 | 6 13 8 | | 22. | 0.8 1.6 2.4 | 20 19 39 | 387 | 2 5 2 | | 23. | 1.3 2.0 3.3 | 32 27 59 | 951 | 3 4 1 | | 24. | 1.2 1.6 2.9 | 30 25 55 | 916 | 5 10 2 | | 25. | 0.9 1.5 2.4 | 35 23 58 | 1396 | 8 12 4 | | 26. | 0.8 2.1 2.9 | 31 34 64 | 1756 | 7 12 2 | | 27. | 0.9 2.4 3.3 | 32 37 69 | 1447 | 4 9 2 | | 28. | 0.7 2.6 3.2 | 22 44 67 | 976 | 4 12 3 | | 29. | 0.7 2.2 2.9 | 18 38 56 | 959 | 4 12 4 | +------+----------------+-------------------+-------+--------------+ | Mean | 1.0 2.0 3.0 | 20.2 30.3 50.5 | 620 | 5 9 3 | +------+----------------+-------------------+-------+--------------+ | Days | 29 29 29 | 29 29 29 | 29 | | +------+----------------+-------------------+-------+--------------+ Based on 271 observations of 25 stations. Barnes,H. L 76 910 5 Keller,H.U. L 40 480 4 Battaiola,R. S 901250 1 Michalovce Obs. L1502250 8 Beltran,G.V. S2001600 13 Moeller,M. L 791000 15 Capricornio Obs.L1502250 16 Morales,G. S 902000 26 Fritsche,S. L 63 840 11 Rim. Sobota Obs.L1502250 20 Goetz,M. S1001000 5 Schott,G.-L. L 80 910 13 Hickmann,R. L 60 700 4 Schroeder,G. L 751200 13 Hoerenz,M. L 60 700 8 Schulze,W. L 63 840 5 Holl,M. L 80 400 7 Suzuki,M. L100 0 26 Hurbanovo Obs. L1502250 20 Van Slooten,B. L 901300 13 John,J. S1501200 4 WFS,Berlin L1502250 8 Joppich,H. L 60 900 4 Willi,X. S2001320 9 Kandilli Obs. L2003070 13