# 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 1980    9  10  18  19  12    23   7  31  24  21    28  29  27   1  13 
 Feb 1980   13   3  12   5  10    22  21  11   4  17    16  15   6  14*  8*
 Mar 1980   15  12   2   1  18    20  24  16  10   3    26  31  21* 22* 30*
 Apr 1980    2   1  18  21  19    28  26  27  29  20    11  12   6  10  15 
 May 1980    3  17  16   2  21    18  28   4  20  15    11  25  12   9* 14*
 Jun 1980   27  17  18  28   5    15  29   4  20  23    11  10  12   7  13 
 Jul 1980    2  10   3  23   1    22K 12  31  16  29    25  26  18   5* 27*
 Aug 1980    1   5   8  28  24    29K 23  15  25K 13    19  27  16   6  18*
 Sep 1980   21  24   2  26  10    18  23  30  19  11    12* 13* 17*  9*  4*
 Oct 1980   28   1  29  27  20    16   2  17  13   3K   23  11  31   4  25 
 Nov 1980    5   3   7   8  13     6  22A  9A 23A 14A   11  30  15  28  26 
 Dec 1980   24   6   5  28  17    23  13   7  26   2A   19  21   3  20   1*