# 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 2023 02 23 00.0 01.50 33291.00000 33291.06250 4.333 32 1 2023 02 23 03.0 04.50 33291.12500 33291.18750 3.667 22 1 2023 02 23 06.0 07.50 33291.25000 33291.31250 3.000 15 1 2023 02 23 09.0 10.50 33291.37500 33291.43750 2.667 12 1 2023 02 23 12.0 13.50 33291.50000 33291.56250 2.667 12 1 2023 02 23 15.0 16.50 33291.62500 33291.68750 4.000 27 1 2023 02 23 18.0 19.50 33291.75000 33291.81250 3.333 18 1 2023 02 23 21.0 22.50 33291.87500 33291.93750 3.667 22 1 2023 02 24 00.0 01.50 33292.00000 33292.06250 2.333 9 1 2023 02 24 03.0 04.50 33292.12500 33292.18750 1.000 4 1 2023 02 24 06.0 07.50 33292.25000 33292.31250 2.000 7 1 2023 02 24 09.0 10.50 33292.37500 33292.43750 1.333 5 1 2023 02 24 12.0 13.50 33292.50000 33292.56250 1.667 6 1 2023 02 24 15.0 16.50 33292.62500 33292.68750 0.667 3 1 2023 02 24 18.0 19.50 33292.75000 33292.81250 0.000 0 1 2023 02 24 21.0 22.50 33292.87500 33292.93750 0.333 2 1 2023 02 25 00.0 01.50 33293.00000 33293.06250 0.667 3 1 2023 02 25 03.0 04.50 33293.12500 33293.18750 0.333 2 1 2023 02 25 06.0 07.50 33293.25000 33293.31250 1.667 6 1 2023 02 25 09.0 10.50 33293.37500 33293.43750 2.000 7 1 2023 02 25 12.0 13.50 33293.50000 33293.56250 2.000 7 1 2023 02 25 15.0 16.50 33293.62500 33293.68750 3.333 18 1 2023 02 25 18.0 19.50 33293.75000 33293.81250 3.000 15 1 2023 02 25 21.0 22.50 33293.87500 33293.93750 3.333 18 1 2023 02 26 00.0 01.50 33294.00000 33294.06250 3.333 18 1 2023 02 26 03.0 04.50 33294.12500 33294.18750 2.333 9 1 2023 02 26 06.0 07.50 33294.25000 33294.31250 3.000 15 1 2023 02 26 09.0 10.50 33294.37500 33294.43750 3.333 18 1 2023 02 26 12.0 13.50 33294.50000 33294.56250 3.000 15 1 2023 02 26 15.0 16.50 33294.62500 33294.68750 1.667 6 1 2023 02 26 18.0 19.50 33294.75000 33294.81250 5.000 48 1 2023 02 26 21.0 22.50 33294.87500 33294.93750 5.667 67 1 2023 02 27 00.0 01.50 33295.00000 33295.06250 5.000 48 1 2023 02 27 03.0 04.50 33295.12500 33295.18750 6.000 80 1 2023 02 27 06.0 07.50 33295.25000 33295.31250 6.667 111 1 2023 02 27 09.0 10.50 33295.37500 33295.43750 6.667 111 1 2023 02 27 12.0 13.50 33295.50000 33295.56250 6.333 94 1 2023 02 27 15.0 16.50 33295.62500 33295.68750 6.667 111 1 2023 02 27 18.0 19.50 33295.75000 33295.81250 6.333 94 1 2023 02 27 21.0 22.50 33295.87500 33295.93750 6.000 80 1 2023 02 28 00.0 01.50 33296.00000 33296.06250 5.667 67 1 2023 02 28 03.0 04.50 33296.12500 33296.18750 4.667 39 1 2023 02 28 06.0 07.50 33296.25000 33296.31250 3.000 15 1 2023 02 28 09.0 10.50 33296.37500 33296.43750 3.000 15 1 2023 02 28 12.0 13.50 33296.50000 33296.56250 1.667 6 1 2023 02 28 15.0 16.50 33296.62500 33296.68750 1.333 5 1 2023 02 28 18.0 19.50 33296.75000 33296.81250 4.000 27 1 2023 02 28 21.0 22.50 33296.87500 33296.93750 4.333 32 1 2023 03 01 00.0 01.50 33297.00000 33297.06250 3.333 18 0 2023 03 01 03.0 04.50 33297.12500 33297.18750 1.000 4 0 2023 03 01 06.0 07.50 33297.25000 33297.31250 1.333 5 0 2023 03 01 09.0 10.50 33297.37500 33297.43750 3.000 15 0 2023 03 01 12.0 13.50 33297.50000 33297.56250 0.667 3 0 2023 03 01 15.0 16.50 33297.62500 33297.68750 1.333 5 0 2023 03 01 18.0 19.50 33297.75000 33297.81250 2.000 7 0 2023 03 01 21.0 22.50 33297.87500 33297.93750 2.000 7 0 2023 03 02 00.0 01.50 33298.00000 33298.06250 1.000 4 0 2023 03 02 03.0 04.50 33298.12500 33298.18750 1.333 5 0 2023 03 02 06.0 07.50 33298.25000 33298.31250 1.667 6 0 2023 03 02 09.0 10.50 33298.37500 33298.43750 2.000 7 0 2023 03 02 12.0 13.50 33298.50000 33298.56250 1.333 5 0 2023 03 02 15.0 16.50 33298.62500 33298.68750 1.667 6 0 2023 03 02 18.0 19.50 33298.75000 33298.81250 2.667 12 0 2023 03 02 21.0 22.50 33298.87500 33298.93750 3.667 22 0 2023 03 03 00.0 01.50 33299.00000 33299.06250 4.000 27 0 2023 03 03 03.0 04.50 33299.12500 33299.18750 3.667 22 0 2023 03 03 06.0 07.50 33299.25000 33299.31250 3.333 18 0 2023 03 03 09.0 10.50 33299.37500 33299.43750 3.667 22 0 2023 03 03 12.0 13.50 33299.50000 33299.56250 3.667 22 0 2023 03 03 15.0 16.50 33299.62500 33299.68750 1.667 6 0 2023 03 03 18.0 19.50 33299.75000 33299.81250 4.000 27 0 2023 03 03 21.0 22.50 33299.87500 33299.93750 4.333 32 0 2023 03 04 00.0 01.50 33300.00000 33300.06250 3.333 18 0 2023 03 04 03.0 04.50 33300.12500 33300.18750 3.000 15 0 2023 03 04 06.0 07.50 33300.25000 33300.31250 3.000 15 0 2023 03 04 09.0 10.50 33300.37500 33300.43750 3.333 18 0 2023 03 04 12.0 13.50 33300.50000 33300.56250 2.000 7 0 2023 03 04 15.0 16.50 33300.62500 33300.68750 2.333 9 0 2023 03 04 18.0 19.50 33300.75000 33300.81250 3.000 15 0 2023 03 04 21.0 22.50 33300.87500 33300.93750 4.000 27 0 2023 03 05 00.0 01.50 33301.00000 33301.06250 3.333 18 0 2023 03 05 03.0 04.50 33301.12500 33301.18750 3.333 18 0 2023 03 05 06.0 07.50 33301.25000 33301.31250 4.000 27 0 2023 03 05 09.0 10.50 33301.37500 33301.43750 2.667 12 0 2023 03 05 12.0 13.50 33301.50000 33301.56250 4.000 27 0 2023 03 05 15.0 16.50 33301.62500 33301.68750 3.333 18 0 2023 03 05 18.0 19.50 33301.75000 33301.81250 4.333 32 0 2023 03 05 21.0 22.50 33301.87500 33301.93750 3.667 22 0 2023 03 06 00.0 01.50 33302.00000 33302.06250 4.000 27 0 2023 03 06 03.0 04.50 33302.12500 33302.18750 3.000 15 0 2023 03 06 06.0 07.50 33302.25000 33302.31250 2.667 12 0 2023 03 06 09.0 10.50 33302.37500 33302.43750 2.333 9 0 2023 03 06 12.0 13.50 33302.50000 33302.56250 2.667 12 0 2023 03 06 15.0 16.50 33302.62500 33302.68750 3.000 15 0 2023 03 06 18.0 19.50 33302.75000 33302.81250 2.667 12 0 2023 03 06 21.0 22.50 33302.87500 33302.93750 3.667 22 0 2023 03 07 00.0 01.50 33303.00000 33303.06250 2.667 12 0 2023 03 07 03.0 04.50 33303.12500 33303.18750 3.000 15 0 2023 03 07 06.0 07.50 33303.25000 33303.31250 3.000 15 0 2023 03 07 09.0 10.50 33303.37500 33303.43750 3.000 15 0 2023 03 07 12.0 13.50 33303.50000 33303.56250 2.000 7 0 2023 03 07 15.0 16.50 33303.62500 33303.68750 1.000 4 0 2023 03 07 18.0 19.50 33303.75000 33303.81250 1.000 4 0 2023 03 07 21.0 22.50 33303.87500 33303.93750 0.667 3 0 2023 03 08 00.0 01.50 33304.00000 33304.06250 1.000 4 0 2023 03 08 03.0 04.50 33304.12500 33304.18750 1.667 6 0 2023 03 08 06.0 07.50 33304.25000 33304.31250 2.000 7 0 2023 03 08 09.0 10.50 33304.37500 33304.43750 1.667 6 0 2023 03 08 12.0 13.50 33304.50000 33304.56250 1.000 4 0 2023 03 08 15.0 16.50 33304.62500 33304.68750 1.333 5 0 2023 03 08 18.0 19.50 33304.75000 33304.81250 3.000 15 0 2023 03 08 21.0 22.50 33304.87500 33304.93750 2.667 12 0 2023 03 09 00.0 01.50 33305.00000 33305.06250 2.000 7 0 2023 03 09 03.0 04.50 33305.12500 33305.18750 3.667 22 0 2023 03 09 06.0 07.50 33305.25000 33305.31250 4.000 27 0 2023 03 09 09.0 10.50 33305.37500 33305.43750 3.667 22 0 2023 03 09 12.0 13.50 33305.50000 33305.56250 3.000 15 0 2023 03 09 15.0 16.50 33305.62500 33305.68750 2.667 12 0 2023 03 09 18.0 19.50 33305.75000 33305.81250 2.333 9 0 2023 03 09 21.0 22.50 33305.87500 33305.93750 2.333 9 0 2023 03 10 00.0 01.50 33306.00000 33306.06250 3.333 18 0 2023 03 10 03.0 04.50 33306.12500 33306.18750 2.000 7 0 2023 03 10 06.0 07.50 33306.25000 33306.31250 1.667 6 0 2023 03 10 09.0 10.50 33306.37500 33306.43750 0.333 2 0 2023 03 10 12.0 13.50 33306.50000 33306.56250 0.667 3 0 2023 03 10 15.0 16.50 33306.62500 33306.68750 2.667 12 0 2023 03 10 18.0 19.50 33306.75000 33306.81250 2.000 7 0 2023 03 10 21.0 22.50 33306.87500 33306.93750 3.000 15 0 2023 03 11 00.0 01.50 33307.00000 33307.06250 3.000 15 0 2023 03 11 03.0 04.50 33307.12500 33307.18750 2.000 7 0 2023 03 11 06.0 07.50 33307.25000 33307.31250 1.333 5 0 2023 03 11 09.0 10.50 33307.37500 33307.43750 0.333 2 0 2023 03 11 12.0 13.50 33307.50000 33307.56250 0.667 3 0 2023 03 11 15.0 16.50 33307.62500 33307.68750 0.333 2 0 2023 03 11 18.0 19.50 33307.75000 33307.81250 1.667 6 0 2023 03 11 21.0 22.50 33307.87500 33307.93750 2.667 12 0 2023 03 12 00.0 01.50 33308.00000 33308.06250 2.667 12 0 2023 03 12 03.0 04.50 33308.12500 33308.18750 2.000 7 0 2023 03 12 06.0 07.50 33308.25000 33308.31250 3.000 15 0 2023 03 12 09.0 10.50 33308.37500 33308.43750 2.333 9 0 2023 03 12 12.0 13.50 33308.50000 33308.56250 0.667 3 0 2023 03 12 15.0 16.50 33308.62500 33308.68750 0.333 2 0 2023 03 12 18.0 19.50 33308.75000 33308.81250 0.667 3 0 2023 03 12 21.0 22.50 33308.87500 33308.93750 0.667 3 0 2023 03 13 00.0 01.50 33309.00000 33309.06250 0.667 3 0 2023 03 13 03.0 04.50 33309.12500 33309.18750 0.000 0 0 2023 03 13 06.0 07.50 33309.25000 33309.31250 0.333 2 0 2023 03 13 09.0 10.50 33309.37500 33309.43750 0.333 2 0 2023 03 13 12.0 13.50 33309.50000 33309.56250 0.333 2 0 2023 03 13 15.0 16.50 33309.62500 33309.68750 1.333 5 0 2023 03 13 18.0 19.50 33309.75000 33309.81250 0.333 2 0 2023 03 13 21.0 22.50 33309.87500 33309.93750 0.667 3 0 2023 03 14 00.0 01.50 33310.00000 33310.06250 2.333 9 0 2023 03 14 03.0 04.50 33310.12500 33310.18750 3.667 22 0 2023 03 14 06.0 07.50 33310.25000 33310.31250 3.333 18 0 2023 03 14 09.0 10.50 33310.37500 33310.43750 3.333 18 0 2023 03 14 12.0 13.50 33310.50000 33310.56250 3.000 15 0 2023 03 14 15.0 16.50 33310.62500 33310.68750 3.000 15 0 2023 03 14 18.0 19.50 33310.75000 33310.81250 2.667 12 0 2023 03 14 21.0 22.50 33310.87500 33310.93750 4.333 32 0 2023 03 15 00.0 01.50 33311.00000 33311.06250 3.667 22 0 2023 03 15 03.0 04.50 33311.12500 33311.18750 5.333 56 0 2023 03 15 06.0 07.50 33311.25000 33311.31250 4.333 32 0 2023 03 15 09.0 10.50 33311.37500 33311.43750 4.000 27 0 2023 03 15 12.0 13.50 33311.50000 33311.56250 2.667 12 0 2023 03 15 15.0 16.50 33311.62500 33311.68750 1.667 6 0 2023 03 15 18.0 19.50 33311.75000 33311.81250 2.000 7 0 2023 03 15 21.0 22.50 33311.87500 33311.93750 5.667 67 0 2023 03 16 00.0 01.50 33312.00000 33312.06250 4.000 27 0 2023 03 16 03.0 04.50 33312.12500 33312.18750 2.667 12 0 2023 03 16 06.0 07.50 33312.25000 33312.31250 0.667 3 0 2023 03 16 09.0 10.50 33312.37500 33312.43750 1.000 4 0 2023 03 16 12.0 13.50 33312.50000 33312.56250 0.000 0 0 2023 03 16 15.0 16.50 33312.62500 33312.68750 0.333 2 0 2023 03 16 18.0 19.50 33312.75000 33312.81250 0.667 3 0 2023 03 16 21.0 22.50 33312.87500 33312.93750 0.333 2 0 2023 03 17 00.0 01.50 33313.00000 33313.06250 0.333 2 0 2023 03 17 03.0 04.50 33313.12500 33313.18750 1.333 5 0 2023 03 17 06.0 07.50 33313.25000 33313.31250 1.667 6 0 2023 03 17 09.0 10.50 33313.37500 33313.43750 2.667 12 0 2023 03 17 12.0 13.50 33313.50000 33313.56250 2.000 7 0 2023 03 17 15.0 16.50 33313.62500 33313.68750 0.333 2 0 2023 03 17 18.0 19.50 33313.75000 33313.81250 0.333 2 0 2023 03 17 21.0 22.50 33313.87500 33313.93750 2.000 7 0 2023 03 18 00.0 01.50 33314.00000 33314.06250 2.333 9 0 2023 03 18 03.0 04.50 33314.12500 33314.18750 2.333 9 0 2023 03 18 06.0 07.50 33314.25000 33314.31250 1.667 6 0 2023 03 18 09.0 10.50 33314.37500 33314.43750 2.333 9 0 2023 03 18 12.0 13.50 33314.50000 33314.56250 2.000 7 0 2023 03 18 15.0 16.50 33314.62500 33314.68750 1.333 5 0 2023 03 18 18.0 19.50 33314.75000 33314.81250 2.000 7 0 2023 03 18 21.0 22.50 33314.87500 33314.93750 1.000 4 0 2023 03 19 00.0 01.50 33315.00000 33315.06250 1.667 6 0 2023 03 19 03.0 04.50 33315.12500 33315.18750 2.667 12 0 2023 03 19 06.0 07.50 33315.25000 33315.31250 2.333 9 0 2023 03 19 09.0 10.50 33315.37500 33315.43750 1.333 5 0 2023 03 19 12.0 13.50 33315.50000 33315.56250 1.333 5 0 2023 03 19 15.0 16.50 33315.62500 33315.68750 2.333 9 0 2023 03 19 18.0 19.50 33315.75000 33315.81250 3.000 15 0 2023 03 19 21.0 22.50 33315.87500 33315.93750 1.667 6 0 2023 03 20 00.0 01.50 33316.00000 33316.06250 3.000 15 0 2023 03 20 03.0 04.50 33316.12500 33316.18750 0.667 3 0 2023 03 20 06.0 07.50 33316.25000 33316.31250 0.667 3 0 2023 03 20 09.0 10.50 33316.37500 33316.43750 2.000 7 0 2023 03 20 12.0 13.50 33316.50000 33316.56250 3.667 22 0 2023 03 20 15.0 16.50 33316.62500 33316.68750 4.000 27 0 2023 03 20 18.0 19.50 33316.75000 33316.81250 1.667 6 0 2023 03 20 21.0 22.50 33316.87500 33316.93750 2.667 12 0 2023 03 21 00.0 01.50 33317.00000 33317.06250 2.667 12 0 2023 03 21 03.0 04.50 33317.12500 33317.18750 1.000 4 0 2023 03 21 06.0 07.50 33317.25000 33317.31250 1.667 6 0 2023 03 21 09.0 10.50 33317.37500 33317.43750 2.000 7 0 2023 03 21 12.0 13.50 33317.50000 33317.56250 1.000 4 0 2023 03 21 15.0 16.50 33317.62500 33317.68750 2.333 9 0 2023 03 21 18.0 19.50 33317.75000 33317.81250 1.333 5 0 2023 03 21 21.0 22.50 33317.87500 33317.93750 2.333 9 0 2023 03 22 00.0 01.50 33318.00000 33318.06250 4.000 27 0 2023 03 22 03.0 04.50 33318.12500 33318.18750 3.667 22 0 2023 03 22 06.0 07.50 33318.25000 33318.31250 2.667 12 0 2023 03 22 09.0 10.50 33318.37500 33318.43750 3.333 18 0 2023 03 22 12.0 13.50 33318.50000 33318.56250 2.333 9 0 2023 03 22 15.0 16.50 33318.62500 33318.68750 2.667 12 0 2023 03 22 18.0 19.50 33318.75000 33318.81250 3.000 15 0 2023 03 22 21.0 22.50 33318.87500 33318.93750 0.667 3 0 2023 03 23 00.0 01.50 33319.00000 33319.06250 1.333 5 0 2023 03 23 03.0 04.50 33319.12500 33319.18750 2.000 7 0 2023 03 23 06.0 07.50 33319.25000 33319.31250 2.667 12 0 2023 03 23 09.0 10.50 33319.37500 33319.43750 4.667 39 0 2023 03 23 12.0 13.50 33319.50000 33319.56250 7.000 132 0 2023 03 23 15.0 16.50 33319.62500 33319.68750 5.000 48 0 2023 03 23 18.0 19.50 33319.75000 33319.81250 6.333 94 0 2023 03 23 21.0 22.50 33319.87500 33319.93750 7.333 154 0 2023 03 24 00.0 01.50 33320.00000 33320.06250 7.333 154 0 2023 03 24 03.0 04.50 33320.12500 33320.18750 7.667 179 0 2023 03 24 06.0 07.50 33320.25000 33320.31250 6.333 94 0 2023 03 24 09.0 10.50 33320.37500 33320.43750 4.333 32 0 2023 03 24 12.0 13.50 33320.50000 33320.56250 2.333 9 0 2023 03 24 15.0 16.50 33320.62500 33320.68750 3.333 18 0 2023 03 24 18.0 19.50 33320.75000 33320.81250 4.333 32 0 2023 03 24 21.0 22.50 33320.87500 33320.93750 -1.000 -1 0