# PURPOSE: This file distributes the Hp60 index and ap60 index of the geomagnetic Hpo index family
# LICENSE: CC BY 4.0
# SOURCE: Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences, please cite:
# Yamazaki, Y., Matzka, J., da Silva, M.V., Kervalishvili, G., Korte, M., Rauberg, J., 2024. Assessment of geomagnetic activity for the 
# Kp=9 "Gannon Storm" in May 2024 based on version 3.0 Hpo Indices. ESS Open Archive, https://doi.org/10.22541/essoar.171838396.68563140/v1
#
# Hp60 and ap60
# Hp60 and ap60 are produced by Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences. Both indices are unitless.
# Described in: Yamazaki et al. (2024), see reference above.
# Data publication: Matzka, J., Bronkalla, O., da Silva, M.V., Kervalishvili, G., Rauberg, J., Korte., M. and Yamazaki, Y., 2024. Geomagnetic
# Hpo index. V. 3.0. GFZ Data Services, https://doi.org/10.5880/Hpo.0003
# 
# Short file description (for a detailed file description, see Hpo_format.txt):
# 30 header lines, all starting with #
# ASCII, blank separated and fixed length, missing data indicated by -1.000 for Hp60 and -1 for ap60
# YYYY MM DD is date of UT day, hh.h is starting time in hours of interval for which Hp60 and ap60 are given
# hh._m is mid time in hours of interval for which Hp60 and ap60 are given
# days is days since 1932-01-01 00:00 UT to start of interval, days_m is days since 1932-01-01 00:00 UT to mid of interval
# Hp60, ap60
# Currently always D = 0, reserved for future use.
#
#
#
#
#
# The format for each line is (i stands for integer, f for float):
#iii ii ii ff.f ff.ff fffff.fffff fffff.fffff ff.fff iiii i
#
# The parameters in each line are:
#YYY MM DD hh.h hh._m        days      days_m   Hp60 ap60 D