# DOI: https://doi.org/10.5880/Kp.0001 # LICENCE: CC BY 4.0, please cite: # Matzka, J., Bronkalla, O., Tornow, K., Elger, K. and Stolle, C., 2021. # Geomagnetic Kp index. V. 1.0. GFZ Data Services, # https://doi.org/10.5880/Kp.0001 # Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., # 2021. The geomagnetic Kp index and derived indices of geomagnetic activity. # Space Weather, https://doi.org/10.1029/2020SW002641 # The Kp index was introduced by Bartels (1949) and is produced by Geomagnetic # Observatory Niemegk, GFZ German Research Centre for Geosciences. International Quietest Days Most Disturbed Days Month Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 D1 D2 D3 D4 D5 Jan 1982 14 12 13 19 9 10 5 11 20 26A 31 22 30 23 3 Feb 1982 16 27A 28A 9A 15A 8A 21A 24A 7A 20A 2 13 22 4 11 Mar 1982 6 7 16 28K 15A 23A 12A 27A 11A 19A 2 1 22 21 25 Apr 1982 7 14 26A 19A 23A 15A 9A 13A 18A 16A 10 3 25 11 2 May 1982 23 22 24 7 8 10 12 13 6 9A 28 27 3 30 29 Jun 1982 5 4A 18A 17 3A 21A 8A 16A 7A 6A 13 12 10 30 11 Jul 1982 4 5 3 10A 2A 9A 21A 23A 6A 8A 14 13 24 16 12 Aug 1982 15 8 16K 14A 19A 13A 28A 27A 20A 1A 7 2 29 30 10 Sep 1982 29A 1A 10A 30A 17A 16A 8A 2A 15A 25A 6 22 7 26 21 Oct 1982 24 23 9 15A 22A 5A 3A 28A 4A 21A 29 7 31 13 14 Nov 1982 7 17K 20K 9A 4A 16A 5A 19A 10A 6A 24 25 1 2 29 Dec 1982 1 6 2 13 31A 26A 14A 3A 5A 15A 17 20 10 18 22