# 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 1948    4  26  14  24  25    28  15  13  16K 27A    3   8  17   2*  7*
 Feb 1948   21   1K 26   9  22    20  25K 11A 12A  8A    3  16  15  23  18 
 Mar 1948   25  24  23  29  28    18   8K 11A  7A  9A   15   1  14  13   2 
 Apr 1948    8   9   5  19  17    16  11A 23A  4A 10A   22   6   1  21  29*
 May 1948   19  20  28  26A  5A   14A 27A 31A 18A 17A   16  15  21   7   9 
 Jun 1948   16  15  29  28  14     4  30  11K  6  23     1  21  26  19* 22*
 Jul 1948   19  24  23  20  18    27  25  22   2  11    31   4  29* 30* 14*
 Aug 1948   16  26  27  17  18     5A 25A 15A  6A  3A    8  10   9  12  20 
 Sep 1948   28  27K  6  20   5A   14A 13A 10A 21A 17A    1  25  29   2  24 
 Oct 1948    6   9   7K  8  16A   30A 29A 28A 31A 13A   19  18  21   1  15 
 Nov 1948   30   4  12   5   6K   29K 14  11K 10A 13A    2  20  21  25  22 
 Dec 1948    1  12  28   4   5K   23A 17A  2A  9A 20A   25  14  31  21   6