# PURPOSE: This file distributes the Kp index and ap index (one line per three-hour interval) # LICENSE: CC BY 4.0 # SOURCE: Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences # PLEASE CITE: 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 # # Kp, ap and Ap # The three-hourly equivalent planetary amplitude ap is derived from Kp and the daily equivalent planetary amplitude Ap is the daily mean of ap. # Kp is unitless. Ap and ap are unitless and can be multiplied by 2 nT to yield the average geomagnetic disturbance at 50 degree geomagnetic latitude. # Kp, ap and Ap were introduced by Bartels (1949, 1957) and are produced by Geomagnetic Observatory Niemegk, GFZ German Research Centre for Geosciences. # Described in: Matzka et al. (2021), see reference above. # Data publication: 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 # # Short file description (for a detailed file description, see Kp_ap_Ap_SN_F107_format.txt): # 30 header lines, all starting with # # ASCII, blank separated and fixed length, missing data indicated by -1.000 for Kp and -1 for ap # YYYY MM DD is date of UT day, hh.h is starting time in hours of interval for which Kp and ap are given # hh._m is mid time in hours of interval for which Kp and ap 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 # Kp, ap # D indicates if the Kp and ap values are definitive (D = 1) or preliminary (D=0) # # # # # 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 Kp ap D 2024 03 28 00.0 01.50 33690.00000 33690.06250 2.000 7 1 2024 03 28 03.0 04.50 33690.12500 33690.18750 1.333 5 1 2024 03 28 06.0 07.50 33690.25000 33690.31250 1.333 5 1 2024 03 28 09.0 10.50 33690.37500 33690.43750 1.667 6 1 2024 03 28 12.0 13.50 33690.50000 33690.56250 2.667 12 1 2024 03 28 15.0 16.50 33690.62500 33690.68750 1.667 6 1 2024 03 28 18.0 19.50 33690.75000 33690.81250 2.000 7 1 2024 03 28 21.0 22.50 33690.87500 33690.93750 2.333 9 1 2024 03 29 00.0 01.50 33691.00000 33691.06250 1.667 6 1 2024 03 29 03.0 04.50 33691.12500 33691.18750 1.667 6 1 2024 03 29 06.0 07.50 33691.25000 33691.31250 1.667 6 1 2024 03 29 09.0 10.50 33691.37500 33691.43750 1.333 5 1 2024 03 29 12.0 13.50 33691.50000 33691.56250 1.333 5 1 2024 03 29 15.0 16.50 33691.62500 33691.68750 0.667 3 1 2024 03 29 18.0 19.50 33691.75000 33691.81250 0.333 2 1 2024 03 29 21.0 22.50 33691.87500 33691.93750 0.333 2 1 2024 03 30 00.0 01.50 33692.00000 33692.06250 0.000 0 1 2024 03 30 03.0 04.50 33692.12500 33692.18750 0.000 0 1 2024 03 30 06.0 07.50 33692.25000 33692.31250 0.333 2 1 2024 03 30 09.0 10.50 33692.37500 33692.43750 0.667 3 1 2024 03 30 12.0 13.50 33692.50000 33692.56250 1.333 5 1 2024 03 30 15.0 16.50 33692.62500 33692.68750 1.667 6 1 2024 03 30 18.0 19.50 33692.75000 33692.81250 1.000 4 1 2024 03 30 21.0 22.50 33692.87500 33692.93750 1.667 6 1 2024 03 31 00.0 01.50 33693.00000 33693.06250 3.667 22 1 2024 03 31 03.0 04.50 33693.12500 33693.18750 2.000 7 1 2024 03 31 06.0 07.50 33693.25000 33693.31250 2.333 9 1 2024 03 31 09.0 10.50 33693.37500 33693.43750 1.333 5 1 2024 03 31 12.0 13.50 33693.50000 33693.56250 1.000 4 1 2024 03 31 15.0 16.50 33693.62500 33693.68750 1.333 5 1 2024 03 31 18.0 19.50 33693.75000 33693.81250 1.000 4 1 2024 03 31 21.0 22.50 33693.87500 33693.93750 2.333 9 1 2024 04 01 00.0 01.50 33694.00000 33694.06250 2.000 7 0 2024 04 01 03.0 04.50 33694.12500 33694.18750 3.333 18 0 2024 04 01 06.0 07.50 33694.25000 33694.31250 3.667 22 0 2024 04 01 09.0 10.50 33694.37500 33694.43750 1.667 6 0 2024 04 01 12.0 13.50 33694.50000 33694.56250 1.667 6 0 2024 04 01 15.0 16.50 33694.62500 33694.68750 1.333 5 0 2024 04 01 18.0 19.50 33694.75000 33694.81250 2.333 9 0 2024 04 01 21.0 22.50 33694.87500 33694.93750 1.333 5 0 2024 04 02 00.0 01.50 33695.00000 33695.06250 1.000 4 0 2024 04 02 03.0 04.50 33695.12500 33695.18750 1.667 6 0 2024 04 02 06.0 07.50 33695.25000 33695.31250 1.667 6 0 2024 04 02 09.0 10.50 33695.37500 33695.43750 2.333 9 0 2024 04 02 12.0 13.50 33695.50000 33695.56250 2.000 7 0 2024 04 02 15.0 16.50 33695.62500 33695.68750 1.333 5 0 2024 04 02 18.0 19.50 33695.75000 33695.81250 1.667 6 0 2024 04 02 21.0 22.50 33695.87500 33695.93750 1.000 4 0 2024 04 03 00.0 01.50 33696.00000 33696.06250 3.000 15 0 2024 04 03 03.0 04.50 33696.12500 33696.18750 2.000 7 0 2024 04 03 06.0 07.50 33696.25000 33696.31250 1.333 5 0 2024 04 03 09.0 10.50 33696.37500 33696.43750 0.667 3 0 2024 04 03 12.0 13.50 33696.50000 33696.56250 1.333 5 0 2024 04 03 15.0 16.50 33696.62500 33696.68750 1.667 6 0 2024 04 03 18.0 19.50 33696.75000 33696.81250 0.667 3 0 2024 04 03 21.0 22.50 33696.87500 33696.93750 1.000 4 0 2024 04 04 00.0 01.50 33697.00000 33697.06250 0.667 3 0 2024 04 04 03.0 04.50 33697.12500 33697.18750 0.667 3 0 2024 04 04 06.0 07.50 33697.25000 33697.31250 2.333 9 0 2024 04 04 09.0 10.50 33697.37500 33697.43750 3.000 15 0 2024 04 04 12.0 13.50 33697.50000 33697.56250 2.333 9 0 2024 04 04 15.0 16.50 33697.62500 33697.68750 3.000 15 0 2024 04 04 18.0 19.50 33697.75000 33697.81250 3.000 15 0 2024 04 04 21.0 22.50 33697.87500 33697.93750 3.333 18 0 2024 04 05 00.0 01.50 33698.00000 33698.06250 2.000 7 0 2024 04 05 03.0 04.50 33698.12500 33698.18750 3.333 18 0 2024 04 05 06.0 07.50 33698.25000 33698.31250 2.333 9 0 2024 04 05 09.0 10.50 33698.37500 33698.43750 2.667 12 0 2024 04 05 12.0 13.50 33698.50000 33698.56250 2.000 7 0 2024 04 05 15.0 16.50 33698.62500 33698.68750 2.000 7 0 2024 04 05 18.0 19.50 33698.75000 33698.81250 2.333 9 0 2024 04 05 21.0 22.50 33698.87500 33698.93750 2.667 12 0 2024 04 06 00.0 01.50 33699.00000 33699.06250 3.333 18 0 2024 04 06 03.0 04.50 33699.12500 33699.18750 2.667 12 0 2024 04 06 06.0 07.50 33699.25000 33699.31250 3.000 15 0 2024 04 06 09.0 10.50 33699.37500 33699.43750 1.333 5 0 2024 04 06 12.0 13.50 33699.50000 33699.56250 2.000 7 0 2024 04 06 15.0 16.50 33699.62500 33699.68750 1.333 5 0 2024 04 06 18.0 19.50 33699.75000 33699.81250 2.000 7 0 2024 04 06 21.0 22.50 33699.87500 33699.93750 2.000 7 0 2024 04 07 00.0 01.50 33700.00000 33700.06250 1.667 6 0 2024 04 07 03.0 04.50 33700.12500 33700.18750 1.667 6 0 2024 04 07 06.0 07.50 33700.25000 33700.31250 0.667 3 0 2024 04 07 09.0 10.50 33700.37500 33700.43750 1.667 6 0 2024 04 07 12.0 13.50 33700.50000 33700.56250 1.667 6 0 2024 04 07 15.0 16.50 33700.62500 33700.68750 2.000 7 0 2024 04 07 18.0 19.50 33700.75000 33700.81250 1.333 5 0 2024 04 07 21.0 22.50 33700.87500 33700.93750 2.000 7 0 2024 04 08 00.0 01.50 33701.00000 33701.06250 2.333 9 0 2024 04 08 03.0 04.50 33701.12500 33701.18750 2.667 12 0 2024 04 08 06.0 07.50 33701.25000 33701.31250 3.333 18 0 2024 04 08 09.0 10.50 33701.37500 33701.43750 1.667 6 0 2024 04 08 12.0 13.50 33701.50000 33701.56250 0.333 2 0 2024 04 08 15.0 16.50 33701.62500 33701.68750 1.333 5 0 2024 04 08 18.0 19.50 33701.75000 33701.81250 0.667 3 0 2024 04 08 21.0 22.50 33701.87500 33701.93750 0.333 2 0 2024 04 09 00.0 01.50 33702.00000 33702.06250 0.667 3 0 2024 04 09 03.0 04.50 33702.12500 33702.18750 2.667 12 0 2024 04 09 06.0 07.50 33702.25000 33702.31250 3.333 18 0 2024 04 09 09.0 10.50 33702.37500 33702.43750 2.000 7 0 2024 04 09 12.0 13.50 33702.50000 33702.56250 2.000 7 0 2024 04 09 15.0 16.50 33702.62500 33702.68750 1.333 5 0 2024 04 09 18.0 19.50 33702.75000 33702.81250 2.333 9 0 2024 04 09 21.0 22.50 33702.87500 33702.93750 3.000 15 0 2024 04 10 00.0 01.50 33703.00000 33703.06250 3.000 15 0 2024 04 10 03.0 04.50 33703.12500 33703.18750 2.000 7 0 2024 04 10 06.0 07.50 33703.25000 33703.31250 1.333 5 0 2024 04 10 09.0 10.50 33703.37500 33703.43750 1.667 6 0 2024 04 10 12.0 13.50 33703.50000 33703.56250 1.333 5 0 2024 04 10 15.0 16.50 33703.62500 33703.68750 2.667 12 0 2024 04 10 18.0 19.50 33703.75000 33703.81250 2.333 9 0 2024 04 10 21.0 22.50 33703.87500 33703.93750 1.333 5 0 2024 04 11 00.0 01.50 33704.00000 33704.06250 2.333 9 0 2024 04 11 03.0 04.50 33704.12500 33704.18750 2.667 12 0 2024 04 11 06.0 07.50 33704.25000 33704.31250 0.667 3 0 2024 04 11 09.0 10.50 33704.37500 33704.43750 0.667 3 0 2024 04 11 12.0 13.50 33704.50000 33704.56250 1.000 4 0 2024 04 11 15.0 16.50 33704.62500 33704.68750 1.000 4 0 2024 04 11 18.0 19.50 33704.75000 33704.81250 0.667 3 0 2024 04 11 21.0 22.50 33704.87500 33704.93750 1.000 4 0 2024 04 12 00.0 01.50 33705.00000 33705.06250 1.667 6 0 2024 04 12 03.0 04.50 33705.12500 33705.18750 2.333 9 0 2024 04 12 06.0 07.50 33705.25000 33705.31250 1.333 5 0 2024 04 12 09.0 10.50 33705.37500 33705.43750 0.667 3 0 2024 04 12 12.0 13.50 33705.50000 33705.56250 0.333 2 0 2024 04 12 15.0 16.50 33705.62500 33705.68750 0.333 2 0 2024 04 12 18.0 19.50 33705.75000 33705.81250 0.667 3 0 2024 04 12 21.0 22.50 33705.87500 33705.93750 1.333 5 0 2024 04 13 00.0 01.50 33706.00000 33706.06250 1.333 5 0 2024 04 13 03.0 04.50 33706.12500 33706.18750 2.000 7 0 2024 04 13 06.0 07.50 33706.25000 33706.31250 0.667 3 0 2024 04 13 09.0 10.50 33706.37500 33706.43750 0.333 2 0 2024 04 13 12.0 13.50 33706.50000 33706.56250 1.333 5 0 2024 04 13 15.0 16.50 33706.62500 33706.68750 0.667 3 0 2024 04 13 18.0 19.50 33706.75000 33706.81250 0.667 3 0 2024 04 13 21.0 22.50 33706.87500 33706.93750 1.667 6 0 2024 04 14 00.0 01.50 33707.00000 33707.06250 1.667 6 0 2024 04 14 03.0 04.50 33707.12500 33707.18750 0.000 0 0 2024 04 14 06.0 07.50 33707.25000 33707.31250 1.333 5 0 2024 04 14 09.0 10.50 33707.37500 33707.43750 1.333 5 0 2024 04 14 12.0 13.50 33707.50000 33707.56250 1.333 5 0 2024 04 14 15.0 16.50 33707.62500 33707.68750 1.000 4 0 2024 04 14 18.0 19.50 33707.75000 33707.81250 1.000 4 0 2024 04 14 21.0 22.50 33707.87500 33707.93750 1.667 6 0 2024 04 15 00.0 01.50 33708.00000 33708.06250 1.667 6 0 2024 04 15 03.0 04.50 33708.12500 33708.18750 1.333 5 0 2024 04 15 06.0 07.50 33708.25000 33708.31250 0.667 3 0 2024 04 15 09.0 10.50 33708.37500 33708.43750 1.000 4 0 2024 04 15 12.0 13.50 33708.50000 33708.56250 0.333 2 0 2024 04 15 15.0 16.50 33708.62500 33708.68750 1.333 5 0 2024 04 15 18.0 19.50 33708.75000 33708.81250 2.333 9 0 2024 04 15 21.0 22.50 33708.87500 33708.93750 3.000 15 0 2024 04 16 00.0 01.50 33709.00000 33709.06250 4.000 27 0 2024 04 16 03.0 04.50 33709.12500 33709.18750 3.333 18 0 2024 04 16 06.0 07.50 33709.25000 33709.31250 4.000 27 0 2024 04 16 09.0 10.50 33709.37500 33709.43750 3.333 18 0 2024 04 16 12.0 13.50 33709.50000 33709.56250 3.000 15 0 2024 04 16 15.0 16.50 33709.62500 33709.68750 4.667 39 0 2024 04 16 18.0 19.50 33709.75000 33709.81250 5.333 56 0 2024 04 16 21.0 22.50 33709.87500 33709.93750 5.333 56 0 2024 04 17 00.0 01.50 33710.00000 33710.06250 2.667 12 0 2024 04 17 03.0 04.50 33710.12500 33710.18750 0.667 3 0 2024 04 17 06.0 07.50 33710.25000 33710.31250 0.667 3 0 2024 04 17 09.0 10.50 33710.37500 33710.43750 1.333 5 0 2024 04 17 12.0 13.50 33710.50000 33710.56250 1.000 4 0 2024 04 17 15.0 16.50 33710.62500 33710.68750 1.667 6 0 2024 04 17 18.0 19.50 33710.75000 33710.81250 1.333 5 0 2024 04 17 21.0 22.50 33710.87500 33710.93750 2.000 7 0 2024 04 18 00.0 01.50 33711.00000 33711.06250 1.333 5 0 2024 04 18 03.0 04.50 33711.12500 33711.18750 0.333 2 0 2024 04 18 06.0 07.50 33711.25000 33711.31250 0.000 0 0 2024 04 18 09.0 10.50 33711.37500 33711.43750 0.667 3 0 2024 04 18 12.0 13.50 33711.50000 33711.56250 0.667 3 0 2024 04 18 15.0 16.50 33711.62500 33711.68750 0.667 3 0 2024 04 18 18.0 19.50 33711.75000 33711.81250 0.333 2 0 2024 04 18 21.0 22.50 33711.87500 33711.93750 1.667 6 0 2024 04 19 00.0 01.50 33712.00000 33712.06250 1.667 6 0 2024 04 19 03.0 04.50 33712.12500 33712.18750 2.333 9 0 2024 04 19 06.0 07.50 33712.25000 33712.31250 4.333 32 0 2024 04 19 09.0 10.50 33712.37500 33712.43750 4.333 32 0 2024 04 19 12.0 13.50 33712.50000 33712.56250 5.000 48 0 2024 04 19 15.0 16.50 33712.62500 33712.68750 5.333 56 0 2024 04 19 18.0 19.50 33712.75000 33712.81250 7.000 132 0 2024 04 19 21.0 22.50 33712.87500 33712.93750 4.000 27 0 2024 04 20 00.0 01.50 33713.00000 33713.06250 2.333 9 0 2024 04 20 03.0 04.50 33713.12500 33713.18750 2.000 7 0 2024 04 20 06.0 07.50 33713.25000 33713.31250 2.667 12 0 2024 04 20 09.0 10.50 33713.37500 33713.43750 2.667 12 0 2024 04 20 12.0 13.50 33713.50000 33713.56250 2.000 7 0 2024 04 20 15.0 16.50 33713.62500 33713.68750 2.000 7 0 2024 04 20 18.0 19.50 33713.75000 33713.81250 1.667 6 0 2024 04 20 21.0 22.50 33713.87500 33713.93750 2.667 12 0 2024 04 21 00.0 01.50 33714.00000 33714.06250 3.333 18 0 2024 04 21 03.0 04.50 33714.12500 33714.18750 3.000 15 0 2024 04 21 06.0 07.50 33714.25000 33714.31250 2.667 12 0 2024 04 21 09.0 10.50 33714.37500 33714.43750 3.000 15 0 2024 04 21 12.0 13.50 33714.50000 33714.56250 3.667 22 0 2024 04 21 15.0 16.50 33714.62500 33714.68750 3.667 22 0 2024 04 21 18.0 19.50 33714.75000 33714.81250 3.333 18 0 2024 04 21 21.0 22.50 33714.87500 33714.93750 3.000 15 0 2024 04 22 00.0 01.50 33715.00000 33715.06250 2.333 9 0 2024 04 22 03.0 04.50 33715.12500 33715.18750 2.333 9 0 2024 04 22 06.0 07.50 33715.25000 33715.31250 2.333 9 0 2024 04 22 09.0 10.50 33715.37500 33715.43750 1.667 6 0 2024 04 22 12.0 13.50 33715.50000 33715.56250 1.333 5 0 2024 04 22 15.0 16.50 33715.62500 33715.68750 1.333 5 0 2024 04 22 18.0 19.50 33715.75000 33715.81250 1.333 5 0 2024 04 22 21.0 22.50 33715.87500 33715.93750 2.333 9 0 2024 04 23 00.0 01.50 33716.00000 33716.06250 1.667 6 0 2024 04 23 03.0 04.50 33716.12500 33716.18750 1.000 4 0 2024 04 23 06.0 07.50 33716.25000 33716.31250 1.667 6 0 2024 04 23 09.0 10.50 33716.37500 33716.43750 2.000 7 0 2024 04 23 12.0 13.50 33716.50000 33716.56250 1.333 5 0 2024 04 23 15.0 16.50 33716.62500 33716.68750 1.333 5 0 2024 04 23 18.0 19.50 33716.75000 33716.81250 2.333 9 0 2024 04 23 21.0 22.50 33716.87500 33716.93750 2.000 7 0 2024 04 24 00.0 01.50 33717.00000 33717.06250 1.000 4 0 2024 04 24 03.0 04.50 33717.12500 33717.18750 0.667 3 0 2024 04 24 06.0 07.50 33717.25000 33717.31250 0.333 2 0 2024 04 24 09.0 10.50 33717.37500 33717.43750 0.333 2 0 2024 04 24 12.0 13.50 33717.50000 33717.56250 0.333 2 0 2024 04 24 15.0 16.50 33717.62500 33717.68750 0.000 0 0 2024 04 24 18.0 19.50 33717.75000 33717.81250 0.000 0 0 2024 04 24 21.0 22.50 33717.87500 33717.93750 0.667 3 0 2024 04 25 00.0 01.50 33718.00000 33718.06250 0.333 2 0 2024 04 25 03.0 04.50 33718.12500 33718.18750 0.000 0 0 2024 04 25 06.0 07.50 33718.25000 33718.31250 0.000 0 0 2024 04 25 09.0 10.50 33718.37500 33718.43750 0.667 3 0 2024 04 25 12.0 13.50 33718.50000 33718.56250 0.333 2 0 2024 04 25 15.0 16.50 33718.62500 33718.68750 0.333 2 0 2024 04 25 18.0 19.50 33718.75000 33718.81250 0.333 2 0 2024 04 25 21.0 22.50 33718.87500 33718.93750 1.000 4 0 2024 04 26 00.0 01.50 33719.00000 33719.06250 1.333 5 0 2024 04 26 03.0 04.50 33719.12500 33719.18750 2.667 12 0 2024 04 26 06.0 07.50 33719.25000 33719.31250 3.000 15 0 2024 04 26 09.0 10.50 33719.37500 33719.43750 2.000 7 0 2024 04 26 12.0 13.50 33719.50000 33719.56250 1.333 5 0 2024 04 26 15.0 16.50 33719.62500 33719.68750 -1.000 -1 0 2024 04 26 18.0 19.50 33719.75000 33719.81250 -1.000 -1 0 2024 04 26 21.0 22.50 33719.87500 33719.93750 -1.000 -1 0