SONNE Sunspot Network, Observers 2nd Quarter 2007 Name Instrument Obs. Days K Factors s r T. N/S Re' Re g Re' Astrolab Jeugdw. Refr. 0/ 0 10 0 0 0.802 0.867 - 10 0.96 Bavais,J. Refr. 60/ 910 8 0 0 0.777 0.714 - 18 0.85 Brettel,G. Refr. 90/1000 50 0 0 0.781 0.801 - 11 0.98 Buck,A. Refl. 125/1875 61 0 0 0.858 0.770 - 12 0.96 Bulling,A. Refl. 70/1000 32 0 32 0.870 0.915 1.383 7 0.96 Capricornio Obs. Refr. 102/1500 36 0 0 0.574 0.693 - 13 0.95 Carels,J. Refr. 150/1200 59 0 59 0.636 0.636 1.149 13 0.95 Claes,J. Refr. 102/ 0 64 0 44 0.728 0.741 1.386 9 0.96 Claeys,L. Refl. 158/ 0 79 0 0 0.777 0.791 - 13 0.93 DKS Eriskirch Refl. 203/2000 7 0 0 1.183 0.917 - 6 0.97 Daub,K.-P. Refr. 152/1200 28 0 0 0.762 0.724 - 10 0.96 De Kerchove,A. Refl. 203/2032 7 0 0 1.338 1.063 - 11 0.91 Dufoer,S. Refl. 114/ 0 35 0 35 0.785 0.887 1.143 12 0.95 Gahsche,C.-D. Refr. 75/1200 19 0 0 0.672 0.719 - 12 0.95 Goetz,M. Refl. 100/1000 18 0 18 0.756 0.791 1.046 10 0.99 Gubbels,G. Refl. 114/ 0 79 0 79 0.670 0.679 0.796 12 0.95 Gysel,L. Refr. 90/1250 21 0 0 1.304 1.087 - 10 0.97 Hempel,K. Refr. 76/ 700 19 0 19 0.961 0.877 2.255 14 0.96 Herfurth,A. Refr. 250/1500 39 0 0 0.755 0.730 - 26 0.81 Hesse,A. Refr. 100/1000 59 0 0 0.647 0.672 - 10 0.96 Hofmann,W. Refr. 80/ 400 18 0 0 1.703 1.277 - 16 0.94 Holl,M. Refr. 90/1000 18 0 18 0.626 0.717 0.865 6 0.96 Mira Pub. Obs. Refr. 150/5845 37 0 37 0.756 0.755 1.064 11 0.96 Paetzold,A. Refl. 254/ 0 12 0 0 0.769 0.802 - 8 0.93 Schirpke,U. Refr. 80/1200 24 0 0 0.674 0.683 - 11 0.95 Smit,F. Refr. 80/1200 65 65 65 1.014 0.980 1.601 14 0.90 Stetter,H. Refr. 125/1875 40 40 40 1.709 1.485 2.750 19 0.86 Strickling,W. Refl. 150/1200 11 11 11 0.953 0.830 2.133 11 0.96 Taillieu,B. Refr. 150/ 0 74 0 0 0.794 0.743 - 10 0.96 Thooris,B. Refl. 114/ 0 50 0 0 0.864 0.801 - 11 0.96 Tiendesprong Obs Refr. 75/1200 68 0 0 0.717 0.710 - 11 0.96 Van Hessche,D. Refl. 250/ 0 12 0 9 1.621 1.450 2.931 22 0.90 Vanleenhove,M. Refr. 0/ 0 5 0 5 0.805 0.892 1.128 11 0.45 Verboven,R. Refl. 150/ 0 47 0 0 0.978 0.935 - 11 0.95 Willi,X. Refl. 200/1320 17 0 0 0.943 1.025 - 20 0.94 Wollenhaupt,G. Refr. 80/ 600 7 0 6 0.684 0.585 0.500 16 0.92 Standard Observers: Araujo,G. Refr. 80/ 910 88 0 0 0.646 0.659 - 9 0.98 Bachmann,U. Refl. 203/2000 30 0 30 0.633 0.728 0.771 13 0.97 Barnes,H. Refr. 76/ 910 35 0 35 0.820 0.798 1.364 14 0.93 Battaiola,R. Refl. 90/1250 35 0 35 0.835 0.798 1.488 8 0.95 Beltran,G.V. Refl. 200/1600 44 0 0 0.896 0.816 - 14 0.93 Bourgeois,J. Refl. 135/ 800 56 0 56 0.657 0.784 0.799 11 0.98 Bretschneider,H. Refr. 63/ 840 70 70 70 0.548 0.609 1.104 12 0.95 Bruegger,S. Refr. 80/ 400 36 0 36 0.772 0.826 1.086 11 0.96 Bullon,J.M. Refr. 102/1500 52 0 0 0.514 0.631 - 13 0.91 Chudy,M. Refr. 60/ 700 56 0 0 0.919 0.826 - 11 0.95 Coeckelberghs,H. Refr. 60/ 415 33 0 33 1.034 0.866 1.753 15 0.94 Conill,J. Refr. 80/ 760 57 0 57 0.772 0.811 1.096 18 0.91 De Backer,H. Refl. 100/1035 79 0 79 0.739 0.776 1.072 9 0.98 De Ceuninck,E. Refr. 100/ 0 78 0 0 0.625 0.673 - 12 0.95 De Vriese,J. Refr. 102/1500 12 0 0 0.724 0.824 - 10 0.98 Deman,G. Refr. 150/ 0 41 0 0 0.668 0.700 - 11 0.96 Dubois,F. Refr. 125/2500 79 0 79 0.658 0.698 1.088 10 0.97 Fritsche,S. Refr. 63/ 840 56 0 0 0.766 0.788 - 11 0.93 Gabriel,A. Refr. 125/ 0 88 0 0 0.749 0.754 - 11 0.97 Hedewig,R. Refr. 80/1200 67 0 0 0.790 0.849 - 9 0.98 Hickmann,R. Refr. 60/ 700 58 0 58 0.792 0.825 1.062 11 0.96 Hoerenz,M. Refr. 60/ 700 48 0 48 0.768 0.743 1.484 9 0.98 Holl,M. Refr. 80/ 400 80 0 80 0.834 0.818 1.533 10 0.97 Hunstiege,H.J. Refr. 50/ 300 13 0 0 1.120 0.874 - 25 0.77 Hurbanovo Obs. Refr. 150/2250 90 90 90 0.737 0.756 1.309 9 0.97 Joppich,H. Refr. 60/ 900 25 25 25 0.920 0.866 2.111 17 0.94 Junker,E. Refr. 50/ 600 56 0 56 0.852 0.700 1.749 11 0.94 KSB Refr. 0/ 0 78 0 0 0.705 0.739 - 10 0.95 Kaczmarek,A. Refr. 80/ 400 21 0 0 0.705 0.886 - 5 0.98 Kandilli Obs. Refr. 200/3070 84 84 0 0.792 0.774 - 11 0.95 Kleber,S. Refl. 70/ 0 49 0 0 1.079 1.001 - 15 0.87 Kysucka Obs. Refr. 200/3000 74 0 0 0.689 0.760 - 10 0.97 Lau,D. Refr. 60/ 700 39 0 39 0.856 0.808 1.368 12 0.92 Meeus,L. Refr. 102/ 660 57 0 57 0.648 0.681 1.133 7 0.98 Michalovce Obs. Refr. 150/2250 46 46 46 0.839 0.813 1.562 10 0.95 Mochizuki,E. Refr. 90/1000 48 48 0 0.628 0.678 - 11 0.95 Moeller,M. Refr. 79/1000 58 58 58 0.724 0.727 1.104 8 0.98 Morales,G. Refl. 90/2000 84 0 0 0.576 0.625 - 19 0.90 Noy,J.R. Refr. 80/1200 21 21 21 0.701 0.774 0.791 8 0.95 Rim. Sobota Obs. Refr. 150/2250 82 82 82 0.653 0.708 1.027 13 0.95 Robeck,G. Refl. 203/2000 78 78 78 0.925 0.862 1.937 11 0.97 Ruemmler,F. Refr. 80/1200 55 54 0 0.628 0.678 - 10 0.97 Schott,G.-L. Refr. 80/ 910 63 0 0 1.048 0.862 - 13 0.95 Schroeder,G. Refr. 75/1200 65 65 0 0.838 0.854 - 10 0.97 Schulze,W. Refr. 63/ 840 36 36 0 0.728 0.704 - 9 0.97 Seiffert,H.-P. Refr. 100/ 500 54 0 0 0.816 0.822 - 11 0.97 Son,A.T. Refl. 150/4300 44 0 44 0.822 0.830 1.505 11 0.95 Steen,O. Refr. 102/1500 87 0 87 0.701 0.692 1.223 11 0.96 Stemmler,G. Refr. 63/ 670 71 0 0 1.067 0.946 - 13 0.94 Stolzen,P. Refr. 40/ 500 79 0 0 1.078 0.907 - 12 0.93 Suzuki,M. Refr. 100/ 0 72 72 0 0.489 0.588 - 12 0.95 Van Heek,K.H. Refl. 100/1000 26 0 0 0.856 0.822 - 10 0.86 Van Loo,F. Refr. 200/3500 59 0 0 0.811 0.794 - 14 0.92 Van Slooten,B. Refr. 90/1300 85 85 0 0.834 0.769 - 9 0.97 Viertel,A. Refr. 50/ 540 41 0 0 0.965 0.866 - 12 0.93 WFS,Berlin Refr. 150/2250 41 41 0 0.528 0.590 - 9 0.98 ** Number of Observations: 4394 (N/S: 1071; Re': 1856) ** ** Number of Observers: 92 (N/S: 19; Re': 40) ** 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.