RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 20, ES6008, doi:10.2205/2020ES000724, 2020
Observatory | IAGA-code | Time interval | Adopted $K9$ limit, nT | Recommended $K9$ limit, nT |
Arti | ARS | 2001–2013 | 550 | 425 |
Borok | BOX | 2005–2016 | 600 | 700 |
Novosibirsk | NVS | 2005–2016 | 500 | 400 |
Paratunka | PET | 2002–2013 | 450 | 380 |
Yakutsk | YAK | 1979–1991 | 550 | 600 |
Citation: Petrov Valery G., Roman I. Krasnoperov (2020), The aspects of
Copyright 2020 by the Geophysical Center RAS.