# 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 1996 9 8 10 11 7 23 4 1 25 6K 13 14 29* 15* 20* Feb 1996 6 3 21 4 5K 1A 7A 19A 9A 8A 11 24 25* 26* 23* Mar 1996 7 2 6 1 30 31 15 29 5 3 21 11 20 13 24 Apr 1996 7 6 26 28 29 2 25 30 8K 24 17 14 19 12 18 May 1996 18 28 7 23 6 12 11 9 10 2 13* 14* 20* 4* 16* Jun 1996 13 14 25 22 1 3 9 12 26 2 6* 19* 29* 17* 18* Jul 1996 10 9 27 11 24 29 19 6 23 16 31* 8* 28* 3* 5* Aug 1996 8 10 19 12 11 18 22 21 7 4 29 25* 30* 27* 28* Sep 1996 3 30 2 6 1 5 8K 29A 7A 9A 20 10 21 26 12 Oct 1996 6 5 7 26 27 15 1 17K 4 25K 19 22 23 18 9 Nov 1996 30 2 3 1 23 8 11 7 16 22 14 13* 15* 18* 17* Dec 1996 19 6 20 5 1 8 28 26 27 24 10 11* 15* 16* 4*