Provisional sunspot numbers December 2021 +------+----------------+-------------------+-------+--------------+ | | | | | | | Day | Groups | Wolf number | Beck | No. of Obs. | | | | | index | | | | N S Total | N S Total | | N/S T Beck | | | | | | | +------+----------------+-------------------+-------+--------------+ | 01. | - - 2.5 | - - 34 | 239 | 0 5 2 | | 02. | 0.7 1.3 2.0 | 13 15 28 | 242 | 2 15 6 | | 03. | 0.6 0.9 1.5 | 8 10 18 | 72 | 5 13 6 | | 04. | 1.0 0.3 1.4 | 12 4 16 | 67 | 2 6 2 | | 05. | 0.8 0.8 1.6 | 9 9 18 | 36 | 1 6 2 | | 06. | 0.0 0.7 0.7 | 0 10 10 | 36 | 2 10 3 | | 07. | 0.0 0.5 0.5 | 0 7 7 | 25 | 1 9 5 | | 08. | 0.0 0.4 0.4 | 0 5 5 | 7 | 3 8 4 | | 09. | 0.0 0.0 0.0 | 0 0 0 | 0 | 1 7 2 | | 10. | 0.0 0.1 0.1 | 0 1 1 | 0 | 2 11 3 | | 11. | - - 0.0 | - - 0 | 0 | 0 8 3 | | 12. | 0.0 0.8 0.8 | 0 9 9 | 21 | 1 8 3 | | 13. | 0.3 0.9 1.2 | 3 10 13 | 30 | 2 9 4 | | 14. | 0.0 2.0 2.0 | 0 29 29 | 110 | 2 8 4 | | 15. | - - 3.4 | - - 56 | 586 | 0 5 2 | | 16. | 0.6 3.8 4.4 | 9 66 75 | 811 | 4 12 7 | | 17. | 1.7 3.5 5.2 | 23 63 86 | 1152 | 3 10 6 | | 18. | 1.4 2.8 4.2 | 18 53 71 | 662 | 1 8 3 | | 19. | 1.4 4.1 5.5 | 17 71 88 | 968 | 1 5 2 | | 20. | 1.8 4.1 5.9 | 19 65 84 | 783 | 6 20 9 | | 21. | 2.1 4.1 6.2 | 25 67 92 | 909 | 6 18 7 | | 22. | 3.2 4.1 7.4 | 36 69 105 | 1041 | 3 12 6 | | 23. | - - 6.9 | - - 103 | 1093 | 0 3 2 | | 24. | - - 6.1 | - - 94 | 1085 | 0 5 2 | | 25. | 1.3 3.8 5.1 | 27 53 80 | 800 | 2 15 5 | | 26. | 0.9 2.8 3.7 | 21 43 64 | 1191 | 3 15 6 | | 27. | - - 3.9 | - - 70 | 1356 | 0 4 1 | | 28. | 1.6 2.4 3.9 | 38 41 79 | 1406 | 1 7 2 | | 29. | - - 3.7 | - - 64 | 1368 | 0 5 1 | | 30. | - - 2.9 | - - 49 | 687 | 0 4 1 | | 31. | 0.7 2.4 3.1 | 8 34 42 | 371 | 2 9 5 | +------+----------------+-------------------+-------+--------------+ | Mean | 0.9 2.0 3.1 | 12.4 31.9 48.1 | 553 | 2 9 4 | +------+----------------+-------------------+-------+--------------+ | Days | 23 23 31 | 23 23 31 | 31 | | +------+----------------+-------------------+-------+--------------+ Based on 280 observations of 30 stations. Alteholz,T. L 80 0 4 Hurbanovo Obs. L1502250 16 Araujo,G. L 80 910 29 Junker,E. L 50 600 8 Barnes,H. L 76 910 4 Kaczmarek,A. L 80 400 4 Barsch,T. L1021000 9 Kysucka Obs. L2003000 2 Beltran,G.V. S2001600 17 Maluf,W. L1021500 23 Brettel,G. L 901000 6 Meister,S. L125 800 3 Bronst,M. L102 0 9 Michalovce Obs. L1502250 6 Bruegger,S. L 80 400 10 Moeller,M. S 0 0 31 Chudy,M. L 60 700 2 Rim. Sobota Obs.L1502250 9 Daub,K.-P. L1521200 7 Rockmann,K. L 901200 12 Fritsche,S. L 63 840 4 Ruemmler,F. L 801200 7 Grosskopf,P. S2001200 5 Schroeder,G. S 0 0 31 Hermelingmeier,HL 80 600 3 Seiffert,H.-P. L100 500 4 Hoerenz,M. L 60 700 4 Steen,M. L 80 400 3 Holl,M. L 80 400 7 Tiendesprong ObsL 751200 1