# 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 1959    1  21   2  20  24     3   4A 22A 14A 23A    9  10   6   5  18*
 Feb 1959   24  20  18  10  21     7A  1A  8A 19A 23A   25  16  26  28   4 
 Mar 1959   10   9  16  11  22    20  17  21   6K 19    27  28  26  29   1 
 Apr 1959   22  20  19  18   5     6  16   2   4A 17A   10   9  23  24  29 
 May 1959   29   6  28  27  14     7K 30K  3A  2A 26A   12  24   8  16  15 
 Jun 1959   13  17K 12K 16  25K    1A 19A 21A 20A 15A   29  30  28  27   4 
 Jul 1959   30   3   1  29A 13A    6A 10A 23A  4A  2A   15  18  17  16  25 
 Aug 1959   28  27  12  13  14    26A 11A  5A 30A 31A   16  17  20  21  18 
 Sep 1959    9   7A 10A 29A  8A   30A 13A 12A 11A 16A    4  21  22  20  25 
 Oct 1959   11  13  16  28  10    21K 29K  9K 24  12A    4   6   1   3  31 
 Nov 1959   15  20K 11  12A 24A   16A  9A 25A 10A  7A   28   2   1   3  30 
 Dec 1959   21  10  11  22K  7K   20  31A  8A 17A  9A    5   3  28  14  27