SONNE Sunspot Network, Observers 1st Quarter 2007 Name Instrument Obs. Days K Factors s r T. N/S Re' Re g Re' Astrolab Jeugdw. Refr. 0/ 0 5 0 0 0.822 0.900 - 13 1.00 Brettel,G. Refr. 90/1000 41 0 0 0.745 0.744 - 11 0.90 Buck,A. Refl. 125/1875 54 0 0 0.803 0.738 - 14 0.91 Bulling,A. Refl. 70/1000 18 0 18 0.965 1.012 1.733 19 0.86 Capricornio Obs. Refr. 102/1500 33 0 0 0.621 0.723 - 16 0.92 Carels,J. Refr. 150/1200 38 0 38 0.652 0.674 1.068 13 0.90 Claes,J. Refr. 102/ 0 42 0 42 0.714 0.755 1.145 9 0.97 Claeys,L. Refl. 158/ 0 47 0 0 0.750 0.763 - 16 0.92 Daub,K.-P. Refr. 152/1200 17 0 0 0.726 0.718 - 9 0.91 Dufoer,S. Refl. 114/ 0 19 0 9 0.883 0.941 1.231 18 0.94 Gahsche,C.-D. Refr. 75/1200 11 0 0 0.604 0.662 - 9 0.94 Gubbels,G. Refl. 114/ 0 40 0 40 0.675 0.685 0.557 16 0.87 Hesse,A. Refr. 100/1000 11 0 0 0.627 0.689 - 14 0.92 Hofmann,W. Refr. 80/ 400 26 0 0 1.496 1.254 - 31 0.83 Leventhal,M. Refl. 250/2500 67 0 0 0.840 0.847 - 17 0.89 Mira Pub. Obs. Refr. 150/5845 18 0 9 0.744 0.776 0.838 13 0.95 Schirpke,U. Refr. 80/1200 12 0 0 0.730 0.725 - 24 0.73 Smit,F. Refr. 80/1200 46 46 46 1.008 0.977 1.788 15 0.87 Stetter,H. Refr. 125/1875 25 25 25 1.902 1.679 2.599 39 0.63 Strickling,W. Refl. 150/1200 11 11 11 0.974 0.896 2.059 13 0.90 Taillieu,B. Refr. 150/ 0 43 0 0 0.781 0.777 - 13 0.90 Thooris,B. Refl. 114/ 0 45 0 0 0.851 0.784 - 19 0.88 Tiendesprong Obs Refr. 75/1200 33 0 0 0.750 0.742 - 11 0.95 Verboven,R. Refl. 150/ 0 12 0 0 0.958 0.966 - 27 0.93 Willi,X. Refl. 200/1320 13 0 0 0.986 1.040 - 27 0.85 Witten,H. Fegl. 70/ 0 38 0 0 1.102 0.978 - 20 0.85 Standard Observers: Araujo,G. Refr. 80/ 910 81 0 0 0.646 0.659 - 11 0.95 Bachmann,U. Refl. 203/2000 17 0 17 0.633 0.728 0.771 9 0.93 Barnes,H. Refr. 76/ 910 36 0 36 0.820 0.798 1.364 12 0.95 Battaiola,R. Refl. 90/1250 11 0 11 0.835 0.798 1.488 18 0.89 Beltran,G.V. Refl. 200/1600 50 0 0 0.896 0.816 - 19 0.93 Bourgeois,J. Refl. 135/ 800 18 0 18 0.657 0.784 0.799 13 0.93 Bretschneider,H. Refr. 63/ 840 28 28 28 0.548 0.609 1.104 10 0.92 Bruegger,S. Refr. 80/ 400 16 0 16 0.772 0.826 1.086 21 0.72 Chudy,M. Refr. 60/ 700 33 0 0 0.919 0.826 - 15 0.91 Coeckelberghs,H. Refr. 60/ 415 23 0 23 1.034 0.866 1.753 19 0.89 Conill,J. Refr. 80/ 760 77 0 77 0.772 0.811 1.096 14 0.93 De Backer,H. Refl. 100/1035 54 0 54 0.739 0.776 1.072 10 0.97 De Ceuninck,E. Refr. 100/ 0 60 0 0 0.625 0.673 - 16 0.87 De Vriese,J. Refr. 102/1500 20 0 0 0.724 0.824 - 14 0.90 Deman,G. Refr. 150/ 0 26 0 0 0.668 0.700 - 12 0.95 Dubois,F. Refr. 125/2500 62 0 62 0.658 0.698 1.088 11 0.95 Fritsche,S. Refr. 63/ 840 36 0 0 0.766 0.788 - 14 0.90 Gabriel,A. Refr. 125/ 0 71 0 0 0.749 0.754 - 11 0.96 Hedewig,R. Refr. 80/1200 52 0 0 0.790 0.849 - 14 0.92 Hickmann,R. Refr. 60/ 700 28 0 28 0.792 0.825 1.062 21 0.87 Hoerenz,M. Refr. 60/ 700 19 0 19 0.768 0.743 1.484 12 0.97 Holl,M. Refr. 80/ 400 35 0 30 0.834 0.818 1.533 12 0.96 Hunstiege,H.J. Refr. 50/ 300 12 0 0 1.120 0.874 - 29 0.27 Hurbanovo Obs. Refr. 150/2250 65 65 65 0.737 0.756 1.309 12 0.95 Joppich,H. Refr. 60/ 900 10 10 10 0.920 0.866 2.111 11 0.93 Junker,E. Refr. 50/ 600 32 0 32 0.852 0.700 1.749 16 0.88 KSB Refr. 0/ 0 50 0 0 0.705 0.739 - 11 0.96 Kaczmarek,A. Refr. 80/ 400 19 0 0 0.705 0.886 - 22 0.77 Kandilli Obs. Refr. 200/3070 52 52 0 0.792 0.774 - 14 0.93 Kleber,S. Refl. 70/ 0 50 0 0 1.079 1.001 - 21 0.88 Kysucka Obs. Refr. 200/3000 45 0 0 0.689 0.760 - 12 0.95 Lau,D. Refr. 60/ 700 17 0 17 0.856 0.808 1.368 18 0.84 Meeus,L. Refr. 102/ 660 38 0 38 0.648 0.681 1.133 13 0.89 Michalovce Obs. Refr. 150/2250 23 23 23 0.839 0.813 1.562 14 0.95 Mochizuki,E. Refr. 90/1000 76 76 0 0.628 0.678 - 14 0.94 Moeller,M. Refr. 79/1000 57 57 57 0.724 0.727 1.104 9 0.97 Morales,G. Refl. 90/2000 72 0 0 0.576 0.625 - 16 0.84 Noy,J.R. Refr. 80/1200 22 22 22 0.701 0.774 0.791 13 0.95 Rim. Sobota Obs. Refr. 150/2250 52 52 52 0.653 0.708 1.027 10 0.94 Robeck,G. Refl. 203/2000 50 50 50 0.925 0.862 1.937 15 0.93 Ruemmler,F. Refr. 80/1200 18 17 0 0.628 0.678 - 34 0.35 Schott,G.-L. Refr. 80/ 910 30 0 0 1.048 0.862 - 20 0.90 Schroeder,G. Refr. 75/1200 52 52 0 0.838 0.854 - 13 0.93 Schulze,W. Refr. 63/ 840 21 21 0 0.728 0.704 - 9 0.98 Seiffert,H.-P. Refr. 100/ 500 26 0 0 0.816 0.822 - 18 0.92 Son,A.T. Refl. 150/4300 39 0 39 0.822 0.830 1.505 13 0.91 Steen,O. Refr. 102/1500 70 0 70 0.701 0.692 1.223 10 0.95 Stemmler,G. Refr. 63/ 670 47 0 0 1.067 0.946 - 26 0.77 Stolzen,P. Refr. 40/ 500 44 0 0 1.078 0.907 - 16 0.91 Suzuki,M. Refr. 100/ 0 75 75 0 0.489 0.588 - 12 0.94 Van Heek,K.H. Refl. 100/1000 8 0 0 0.856 0.822 - 11 0.73 Van Loo,F. Refr. 200/3500 14 0 0 0.811 0.794 - 11 0.93 Van Slooten,B. Refr. 90/1300 55 55 0 0.834 0.769 - 12 0.96 Viertel,A. Refr. 50/ 540 37 0 0 0.965 0.866 - 17 0.90 WFS,Berlin Refr. 150/2250 28 27 0 0.528 0.590 - 8 0.97 ** Number of Observations: 2924 (N/S: 764; Re': 1132) ** ** Number of Observers: 81 (N/S: 19; Re': 34) ** Legend: Obs. Days: Number of observations of T. N/S Re': Wolf number (Total, N/S), sunspot number according to BECK K Factors: k factors used for reduction of Re g Re': Wolf number, group number, sunspot number according to BECK s: Deviation of Wolf numbers (reduced to Re=100) r: Correlation Observers with less then 5 observations have been excluded this quarter.