Provisional sunspot numbers February 2011 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | 0.0 0.9 0.9 | 0 18 18 | - | 1 5 0 | | 02. | 0.0 1.1 1.1 | 0 18 18 | 155 | 2 6 1 | | 03. | 0.0 1.6 1.6 | 0 22 22 | 78 | 5 13 5 | | 04. | 0.4 1.2 1.6 | 5 17 22 | 133 | 3 7 2 | | 05. | 0.3 0.9 1.2 | 3 13 16 | 22 | 4 9 4 | | 06. | 0.4 0.3 0.7 | 5 3 8 | 9 | 3 10 5 | | 07. | 0.8 0.1 0.9 | 12 1 13 | 27 | 7 18 6 | | 08. | 2.4 0.4 2.9 | 33 5 38 | 144 | 5 14 5 | | 09. | 1.6 0.7 2.3 | 24 12 36 | 182 | 7 20 8 | | 10. | 0.5 0.8 1.3 | 7 14 21 | 172 | 3 12 5 | | 11. | 1.1 1.2 2.3 | 13 18 31 | 126 | 3 13 5 | | 12. | 1.5 1.5 3.0 | 19 25 44 | 389 | 6 16 10 | | 13. | 1.7 1.4 3.1 | 23 37 60 | 1051 | 3 10 3 | | 14. | 2.6 1.2 3.8 | 33 37 70 | 1488 | 4 11 5 | | 15. | 2.5 0.9 3.4 | 37 32 69 | 1488 | 3 8 3 | | 16. | 1.7 1.1 2.8 | 29 30 59 | 959 | 6 16 5 | | 17. | 1.0 1.0 2.0 | 22 31 53 | 1068 | 2 11 3 | | 18. | 1.3 0.7 2.0 | 30 20 50 | 1093 | 2 5 2 | | 19. | 1.7 0.8 2.5 | 45 18 63 | 1465 | 3 7 3 | | 20. | 1.7 0.4 2.1 | 38 6 44 | 730 | 7 12 4 | | 21. | 1.9 0.0 1.9 | 35 0 35 | 650 | 8 18 6 | | 22. | 1.9 0.0 1.9 | 31 0 31 | 485 | 7 17 6 | | 23. | 1.7 0.1 1.8 | 24 1 25 | 237 | 7 19 8 | | 24. | 1.0 0.0 1.0 | 12 0 12 | 66 | 3 11 4 | | 25. | 0.9 0.0 0.9 | 11 0 11 | 15 | 7 20 8 | | 26. | 1.3 0.7 1.9 | 17 8 25 | 199 | 8 19 10 | | 27. | 1.7 0.7 2.4 | 22 8 30 | 266 | 5 10 7 | | 28. | 1.7 0.7 2.3 | 26 8 34 | 113 | 4 10 1 | +------+----------------+-------------------+-------+--------------+ | Mean | 1.3 0.7 2.0 | 19.9 14.4 34.2 | 474 | 5 12 5 | +------+----------------+-------------------+-------+--------------+ | Days | 28 28 28 | 28 28 28 | 27 | | +------+----------------+-------------------+-------+--------------+ Based on 347 observations of 28 stations. Araujo,G. L 80 910 27 Junker,E. L 50 600 12 Barnes,H. L 76 910 11 Kaczmarek,A. L 80 400 5 Battaiola,R. S 901250 5 Michalovce Obs. L1502250 5 Beltran,G.V. S2001600 20 Moeller,M. L 791000 17 Bullon,J.M. L1021000 27 Morales,G. S 902000 20 Chudy,M. L 60 700 7 Noy,J.R. L 801200 16 Dubois,F. L1252500 13 Rim. Sobota Obs.L1502250 12 Fritsche,S. L 63 840 10 Robeck,G. S2032000 14 Gieseke,R. F 50 300 12 Ruemmler,F. L 801200 5 Hedewig,R. L 801200 13 Schott,G.-L. L 80 910 15 Hoerenz,M. L 60 700 5 Suzuki,M. L100 0 24 Holl,M. L 80 400 9 Van Slooten,B. L 901300 11 Hurbanovo Obs. L1502250 14 WFS,Berlin L1502250 9 Joppich,H. L 60 900 1 Willi,X. S2001320 8