The following statistics are based on the WDS reference code. Totals are provided for the number of means (usually, as published - a line of data in the WDS measurement database) and the number of measures (each mean position often comes from N measures, usually increasing their weight). The WDS Top 25 Observers (First author or group gets all credit) Ranked by Nmeans: | Ranked by Nmeas: | Ranked by Nsys: | | | | Obs Nmeans | Obs Nmeas | Obs Nsys | ---------------------- | ----------------- | --------------- | 1 WFC/WFD 74575 | WFC/WFD 103230 | TDS/TDT 14247 | 2 TMA 46481 | B 73756 | LDS 9935 | 3 TYC 40870 | Hei 54569 | HJ 5878 | 4 B 24302 | TMA 46482 | POU 5718 | 5 WSI 21275 | TYC 40871 | RST 5605 | 6 Hei 54569 | Wor 40588 | STF 4372 | 7 HIP 19541 | Rab 37644 | A 3485 | 8 VBs 14515 | VBs 35773 | HDS 3382 | 9 A 14234 | Bu 28757 | J 3317 | 10 Rst 13209 | A 26521 | BRT 3174 | 11 Bu 12971 | WSI 26328 | ES 3134 | 12 Wor 12692 | Vou 26149 | B 3036 | 13 USN 11468 | Cou 25643 | COU 2738 | 14 Cou 11291 | Baz 24268 | BU 2209 | 15 McA 11272 | Rst 23811 | STI 2148 | 16 Vou 8109 | D 21318 | BAL 2017 | 17 J 8078 | Doo 21103 | HU 1671 | 18 Hrt 7884 | HIP 19582 | ARA 1604 | 19 Baz 7814 | Fin 15388 | I 1586 | 20 Doo 6866 | Mlr 14622 | SEI 1364 | 21 Brt 6836 | Cll 14449 | GRV 1149 | 22 Luy 6716 | Dob 14208 | DON 1141 | 23 Mlr 6445 | Dox 13902 | MLB 1136 | 24 Rab 6442 | Es 12659 | SLE 1033 | 25 Pou 6352 | J 12492 | JSP 981 | ==================================================================