UK Solar System Data Centre
This page contains a copy of the table at Adolf-Schmidt-Observatory Niemegk.
The sites listed here are those used in the creation of the Kp index, and hence also in the derived ap index.
The observatories are listed in the order of their geomagnetic latitude (beginning with the highest one).
| Observatory | Geographic | Geomagnetic | K=9 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Code | Name | Location | Active | Lat. | Long. | Lat.* | Long.* | |
| 1 | LER | Lerwick | Scotland | 1932-actual | 60°08' | 358°49' | 62.0° | 89.4° | 1000 nT |
| 2 | MEA | Meanook | Canada | 1932-actual | 54°37' | 246°40' | 61.8° | 305.1° | 1500 nT |
| 3 | SIT | Sitka | Alaska (US) | 1932-actual | 57°03' | 224°40' | 60.4° | 279.2° | 1000 nT |
| 4 | ESK | Eskdalemuir | Scotland | 1932-actual | 55°19' | 356°48' | 57.9° | 84.1° | 750 nT |
| 5 | LOV | Lovö | Schweden | 1954-actual | 59°21' | 17°50' | 57.8° | 106.7° | 600 nT |
| 6 | AGN | Agincourt | Canada | 1932-1969 | 43°47' | 280°44' | 54.4° | 350.2° | 600 nT |
| OTT | Ottawa | Canada | 1969-actual | 45°24' | 284°27' | 56.1° | 354.8° | 750 nT | |
| 7 | RSV | Rude Skov | Denmark | 1932-1984 | 55°51' | 12°27' | 55.5° | 99.6° | 600 nT |
| BFE | Brorfelde | Denmark | 1984-actual | 55°37' | 11°40' | 55.4° | 98.8° | 600 nT | |
| 8 | ABN | Abinger | England | 1932-1957 | 51°11' | 359°37' | 53.5° | 84.6° | 500 nT |
| HAD | Hartland | England | 1957-actual | 50°58' | 355°31' | 54.0° | 80.4° | 500 nT | |
| 9 | WNG | Wingst | Germany | 1938-actual | 53°45' | 9°04' | 54.2° | 95.3° | 500 nT |
| 10 | WIT | Witteveen | Netherland | 1932-1988 | 52°49' | 6°40' | 53.7° | 92.4° | 500 nT |
| NGK | Niemegk | Germany | 1988-actual | 52°04' | 12°41' | 51.9° | 97.8° | 500 nT | |
| 11 | CLH | Cheltenham | USA | 1932-1957 | 38°42' | 283°12' | 49.4° | 353.5° | 500 nT |
| FRD | Fredericksburg | USA | 1957-actual | 38°12' | 282°38' | 48.8° | 352.9° | 500 nT | |
| 12 | TOO | Toolangi | Australia | 1972-1981 | -37°32' | 145°28' | -45.8° | 223.0° | 500 nT |
| CNB | Canberra | Australia | 1981-actual | -35°18' | 149°00' | -43.1° | 226.4° | 500 nT | |
| 13 | AML | Amberley | New Zealand | 1932-1978 | -43°09' | 172°43' | -47.0° | 254.2° | 500 nT |
| EYR | Eyrewell | New Zealand | 1978-actual | -43°25' | 172°21' | -47.3° | 253.9° | 500 nT | |
*)After the IGRF Model 'IGRF 1995', J. Geomag. Geoelectr. Vol.47 (1995) pp. 1257-1261