# 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 2004    8A 29A 12A 31A 14A   21A  2A 15A 27A 11A   22  23  25   7  16 
 Feb 2004   26  17   8  20  10    25  16A 21A  9A  7A   12  29  13  15  11 
 Mar 2004   24   7   6   8  25     5   4  17K 19A 23A   10  11  12   9   2 
 Apr 2004    2   1  22  20  29    27  14  26  19  13     3   6   5   9* 23*
 May 2004   26  18  17  27  16    25   9  14  10   2K    7* 29*  5* 20* 31*
 Jun 2004   22  23  27  20  25    12  21  13  24  19    29* 15*  1* 28*  9*
 Jul 2004    8   7   9  21   6     4  10  29  18   3    27  25  23  26  24 
 Aug 2004    4   8  24   3  25    19  15  23  26  16    30  31  21* 10* 20*
 Sep 2004   11  10   4  12   3    30  26  25   9  27    14  17  16* 22*  6*
 Oct 2004   17  26   7  28  23     1   6  27  19  18    13  14  30* 31*  4*
 Nov 2004    6  15  18   2   5K   19   1K 17K 23  13A   10   8   9   7  12 
 Dec 2004    4   3  19   2  24    20  15  23  14A 31A   12   6  22  30* 28*