# 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 1952   18  20  19  26K 21    17A  2A 22A  3A 31A    5  13  14  15  12 
 Feb 1952    5   4  21  22K  3    15A 23A 17A 20A  2A   24  16   8   6  27 
 Mar 1952   20  28   2  19A 29A   14A 13A 18A  1A 26A    5  31   6   4   7 
 Apr 1952   27  26A 20A 25A 12A   11A 14A 24A 17A 18A   29   3   2  21  30 
 May 1952   16   9  22  15  17K   10K 23A 14A 12A 13A   27   7   3   2   1 
 Jun 1952    7  21  20  13   6     4K 19  28A  2A 12A   30  24   9  23  14 
 Jul 1952   29  30  28  19   2A   18A 17A 12A 27A  7A    5  21  20   6   9 
 Aug 1952   25  14  28  16K 26    22  24  21  13  15K   18  17   3  30  12 
 Sep 1952   19  23  18  13  17    22A 16A 20A  4A 24A   29   8   1  30   9 
 Oct 1952   24  23  22  15  13A   20A 16A 19A 14A 27A    4   5  31  26  30 
 Nov 1952   13  10  12  11   4    19  20   5  14  18A   27  21   1  26  28 
 Dec 1952    9  23  21  20  19     8  14   7  22A  6A    4  29  13  30   2