# 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 11 11 00.0 01.50 33552.00000 33552.06250 1.333 5 1 2023 11 11 03.0 04.50 33552.12500 33552.18750 1.333 5 1 2023 11 11 06.0 07.50 33552.25000 33552.31250 1.667 6 1 2023 11 11 09.0 10.50 33552.37500 33552.43750 0.667 3 1 2023 11 11 12.0 13.50 33552.50000 33552.56250 1.000 4 1 2023 11 11 15.0 16.50 33552.62500 33552.68750 0.667 3 1 2023 11 11 18.0 19.50 33552.75000 33552.81250 0.667 3 1 2023 11 11 21.0 22.50 33552.87500 33552.93750 0.333 2 1 2023 11 12 00.0 01.50 33553.00000 33553.06250 0.333 2 1 2023 11 12 03.0 04.50 33553.12500 33553.18750 1.000 4 1 2023 11 12 06.0 07.50 33553.25000 33553.31250 4.000 27 1 2023 11 12 09.0 10.50 33553.37500 33553.43750 2.667 12 1 2023 11 12 12.0 13.50 33553.50000 33553.56250 2.000 7 1 2023 11 12 15.0 16.50 33553.62500 33553.68750 1.333 5 1 2023 11 12 18.0 19.50 33553.75000 33553.81250 1.000 4 1 2023 11 12 21.0 22.50 33553.87500 33553.93750 2.667 12 1 2023 11 13 00.0 01.50 33554.00000 33554.06250 5.000 48 1 2023 11 13 03.0 04.50 33554.12500 33554.18750 3.667 22 1 2023 11 13 06.0 07.50 33554.25000 33554.31250 1.000 4 1 2023 11 13 09.0 10.50 33554.37500 33554.43750 1.667 6 1 2023 11 13 12.0 13.50 33554.50000 33554.56250 3.000 15 1 2023 11 13 15.0 16.50 33554.62500 33554.68750 2.667 12 1 2023 11 13 18.0 19.50 33554.75000 33554.81250 1.667 6 1 2023 11 13 21.0 22.50 33554.87500 33554.93750 0.667 3 1 2023 11 14 00.0 01.50 33555.00000 33555.06250 2.000 7 1 2023 11 14 03.0 04.50 33555.12500 33555.18750 0.667 3 1 2023 11 14 06.0 07.50 33555.25000 33555.31250 0.000 0 1 2023 11 14 09.0 10.50 33555.37500 33555.43750 0.667 3 1 2023 11 14 12.0 13.50 33555.50000 33555.56250 1.667 6 1 2023 11 14 15.0 16.50 33555.62500 33555.68750 3.000 15 1 2023 11 14 18.0 19.50 33555.75000 33555.81250 2.000 7 1 2023 11 14 21.0 22.50 33555.87500 33555.93750 0.667 3 1 2023 11 15 00.0 01.50 33556.00000 33556.06250 2.667 12 1 2023 11 15 03.0 04.50 33556.12500 33556.18750 2.000 7 1 2023 11 15 06.0 07.50 33556.25000 33556.31250 2.333 9 1 2023 11 15 09.0 10.50 33556.37500 33556.43750 1.667 6 1 2023 11 15 12.0 13.50 33556.50000 33556.56250 3.333 18 1 2023 11 15 15.0 16.50 33556.62500 33556.68750 3.000 15 1 2023 11 15 18.0 19.50 33556.75000 33556.81250 3.333 18 1 2023 11 15 21.0 22.50 33556.87500 33556.93750 2.667 12 1 2023 11 16 00.0 01.50 33557.00000 33557.06250 1.333 5 1 2023 11 16 03.0 04.50 33557.12500 33557.18750 0.667 3 1 2023 11 16 06.0 07.50 33557.25000 33557.31250 2.000 7 1 2023 11 16 09.0 10.50 33557.37500 33557.43750 1.667 6 1 2023 11 16 12.0 13.50 33557.50000 33557.56250 1.667 6 1 2023 11 16 15.0 16.50 33557.62500 33557.68750 2.000 7 1 2023 11 16 18.0 19.50 33557.75000 33557.81250 1.333 5 1 2023 11 16 21.0 22.50 33557.87500 33557.93750 2.000 7 1 2023 11 17 00.0 01.50 33558.00000 33558.06250 0.000 0 1 2023 11 17 03.0 04.50 33558.12500 33558.18750 0.000 0 1 2023 11 17 06.0 07.50 33558.25000 33558.31250 0.000 0 1 2023 11 17 09.0 10.50 33558.37500 33558.43750 0.667 3 1 2023 11 17 12.0 13.50 33558.50000 33558.56250 0.667 3 1 2023 11 17 15.0 16.50 33558.62500 33558.68750 2.000 7 1 2023 11 17 18.0 19.50 33558.75000 33558.81250 1.333 5 1 2023 11 17 21.0 22.50 33558.87500 33558.93750 0.000 0 1 2023 11 18 00.0 01.50 33559.00000 33559.06250 0.000 0 1 2023 11 18 03.0 04.50 33559.12500 33559.18750 0.333 2 1 2023 11 18 06.0 07.50 33559.25000 33559.31250 0.000 0 1 2023 11 18 09.0 10.50 33559.37500 33559.43750 0.000 0 1 2023 11 18 12.0 13.50 33559.50000 33559.56250 0.000 0 1 2023 11 18 15.0 16.50 33559.62500 33559.68750 0.000 0 1 2023 11 18 18.0 19.50 33559.75000 33559.81250 0.667 3 1 2023 11 18 21.0 22.50 33559.87500 33559.93750 1.333 5 1 2023 11 19 00.0 01.50 33560.00000 33560.06250 0.333 2 1 2023 11 19 03.0 04.50 33560.12500 33560.18750 0.333 2 1 2023 11 19 06.0 07.50 33560.25000 33560.31250 1.000 4 1 2023 11 19 09.0 10.50 33560.37500 33560.43750 1.000 4 1 2023 11 19 12.0 13.50 33560.50000 33560.56250 0.667 3 1 2023 11 19 15.0 16.50 33560.62500 33560.68750 0.000 0 1 2023 11 19 18.0 19.50 33560.75000 33560.81250 1.000 4 1 2023 11 19 21.0 22.50 33560.87500 33560.93750 1.000 4 1 2023 11 20 00.0 01.50 33561.00000 33561.06250 0.667 3 1 2023 11 20 03.0 04.50 33561.12500 33561.18750 0.667 3 1 2023 11 20 06.0 07.50 33561.25000 33561.31250 1.333 5 1 2023 11 20 09.0 10.50 33561.37500 33561.43750 1.667 6 1 2023 11 20 12.0 13.50 33561.50000 33561.56250 1.333 5 1 2023 11 20 15.0 16.50 33561.62500 33561.68750 1.333 5 1 2023 11 20 18.0 19.50 33561.75000 33561.81250 1.000 4 1 2023 11 20 21.0 22.50 33561.87500 33561.93750 1.000 4 1 2023 11 21 00.0 01.50 33562.00000 33562.06250 1.000 4 1 2023 11 21 03.0 04.50 33562.12500 33562.18750 2.333 9 1 2023 11 21 06.0 07.50 33562.25000 33562.31250 4.333 32 1 2023 11 21 09.0 10.50 33562.37500 33562.43750 3.333 18 1 2023 11 21 12.0 13.50 33562.50000 33562.56250 3.333 18 1 2023 11 21 15.0 16.50 33562.62500 33562.68750 3.667 22 1 2023 11 21 18.0 19.50 33562.75000 33562.81250 3.000 15 1 2023 11 21 21.0 22.50 33562.87500 33562.93750 4.000 27 1 2023 11 22 00.0 01.50 33563.00000 33563.06250 4.000 27 1 2023 11 22 03.0 04.50 33563.12500 33563.18750 5.000 48 1 2023 11 22 06.0 07.50 33563.25000 33563.31250 5.333 56 1 2023 11 22 09.0 10.50 33563.37500 33563.43750 4.333 32 1 2023 11 22 12.0 13.50 33563.50000 33563.56250 3.333 18 1 2023 11 22 15.0 16.50 33563.62500 33563.68750 4.000 27 1 2023 11 22 18.0 19.50 33563.75000 33563.81250 3.667 22 1 2023 11 22 21.0 22.50 33563.87500 33563.93750 2.333 9 1 2023 11 23 00.0 01.50 33564.00000 33564.06250 3.000 15 1 2023 11 23 03.0 04.50 33564.12500 33564.18750 2.667 12 1 2023 11 23 06.0 07.50 33564.25000 33564.31250 2.333 9 1 2023 11 23 09.0 10.50 33564.37500 33564.43750 1.000 4 1 2023 11 23 12.0 13.50 33564.50000 33564.56250 1.333 5 1 2023 11 23 15.0 16.50 33564.62500 33564.68750 0.333 2 1 2023 11 23 18.0 19.50 33564.75000 33564.81250 0.000 0 1 2023 11 23 21.0 22.50 33564.87500 33564.93750 0.333 2 1 2023 11 24 00.0 01.50 33565.00000 33565.06250 2.000 7 1 2023 11 24 03.0 04.50 33565.12500 33565.18750 1.667 6 1 2023 11 24 06.0 07.50 33565.25000 33565.31250 1.000 4 1 2023 11 24 09.0 10.50 33565.37500 33565.43750 1.667 6 1 2023 11 24 12.0 13.50 33565.50000 33565.56250 2.000 7 1 2023 11 24 15.0 16.50 33565.62500 33565.68750 2.000 7 1 2023 11 24 18.0 19.50 33565.75000 33565.81250 2.667 12 1 2023 11 24 21.0 22.50 33565.87500 33565.93750 2.333 9 1 2023 11 25 00.0 01.50 33566.00000 33566.06250 3.000 15 1 2023 11 25 03.0 04.50 33566.12500 33566.18750 3.333 18 1 2023 11 25 06.0 07.50 33566.25000 33566.31250 4.000 27 1 2023 11 25 09.0 10.50 33566.37500 33566.43750 4.667 39 1 2023 11 25 12.0 13.50 33566.50000 33566.56250 4.667 39 1 2023 11 25 15.0 16.50 33566.62500 33566.68750 4.667 39 1 2023 11 25 18.0 19.50 33566.75000 33566.81250 6.333 94 1 2023 11 25 21.0 22.50 33566.87500 33566.93750 3.667 22 1 2023 11 26 00.0 01.50 33567.00000 33567.06250 4.000 27 1 2023 11 26 03.0 04.50 33567.12500 33567.18750 2.667 12 1 2023 11 26 06.0 07.50 33567.25000 33567.31250 3.000 15 1 2023 11 26 09.0 10.50 33567.37500 33567.43750 1.333 5 1 2023 11 26 12.0 13.50 33567.50000 33567.56250 1.667 6 1 2023 11 26 15.0 16.50 33567.62500 33567.68750 0.000 0 1 2023 11 26 18.0 19.50 33567.75000 33567.81250 0.667 3 1 2023 11 26 21.0 22.50 33567.87500 33567.93750 1.333 5 1 2023 11 27 00.0 01.50 33568.00000 33568.06250 1.333 5 1 2023 11 27 03.0 04.50 33568.12500 33568.18750 1.333 5 1 2023 11 27 06.0 07.50 33568.25000 33568.31250 1.667 6 1 2023 11 27 09.0 10.50 33568.37500 33568.43750 1.667 6 1 2023 11 27 12.0 13.50 33568.50000 33568.56250 2.000 7 1 2023 11 27 15.0 16.50 33568.62500 33568.68750 2.333 9 1 2023 11 27 18.0 19.50 33568.75000 33568.81250 1.333 5 1 2023 11 27 21.0 22.50 33568.87500 33568.93750 2.000 7 1 2023 11 28 00.0 01.50 33569.00000 33569.06250 1.333 5 1 2023 11 28 03.0 04.50 33569.12500 33569.18750 2.000 7 1 2023 11 28 06.0 07.50 33569.25000 33569.31250 2.000 7 1 2023 11 28 09.0 10.50 33569.37500 33569.43750 1.667 6 1 2023 11 28 12.0 13.50 33569.50000 33569.56250 1.333 5 1 2023 11 28 15.0 16.50 33569.62500 33569.68750 2.000 7 1 2023 11 28 18.0 19.50 33569.75000 33569.81250 1.667 6 1 2023 11 28 21.0 22.50 33569.87500 33569.93750 1.333 5 1 2023 11 29 00.0 01.50 33570.00000 33570.06250 0.667 3 1 2023 11 29 03.0 04.50 33570.12500 33570.18750 1.667 6 1 2023 11 29 06.0 07.50 33570.25000 33570.31250 1.333 5 1 2023 11 29 09.0 10.50 33570.37500 33570.43750 0.667 3 1 2023 11 29 12.0 13.50 33570.50000 33570.56250 1.000 4 1 2023 11 29 15.0 16.50 33570.62500 33570.68750 0.667 3 1 2023 11 29 18.0 19.50 33570.75000 33570.81250 1.667 6 1 2023 11 29 21.0 22.50 33570.87500 33570.93750 0.667 3 1 2023 11 30 00.0 01.50 33571.00000 33571.06250 1.667 6 1 2023 11 30 03.0 04.50 33571.12500 33571.18750 2.333 9 1 2023 11 30 06.0 07.50 33571.25000 33571.31250 1.000 4 1 2023 11 30 09.0 10.50 33571.37500 33571.43750 1.000 4 1 2023 11 30 12.0 13.50 33571.50000 33571.56250 1.333 5 1 2023 11 30 15.0 16.50 33571.62500 33571.68750 0.333 2 1 2023 11 30 18.0 19.50 33571.75000 33571.81250 1.000 4 1 2023 11 30 21.0 22.50 33571.87500 33571.93750 0.333 2 1 2023 12 01 00.0 01.50 33572.00000 33572.06250 4.333 32 0 2023 12 01 03.0 04.50 33572.12500 33572.18750 3.667 22 0 2023 12 01 06.0 07.50 33572.25000 33572.31250 4.000 27 0 2023 12 01 09.0 10.50 33572.37500 33572.43750 6.667 111 0 2023 12 01 12.0 13.50 33572.50000 33572.56250 5.667 67 0 2023 12 01 15.0 16.50 33572.62500 33572.68750 4.667 39 0 2023 12 01 18.0 19.50 33572.75000 33572.81250 5.000 48 0 2023 12 01 21.0 22.50 33572.87500 33572.93750 5.000 48 0 2023 12 02 00.0 01.50 33573.00000 33573.06250 5.333 56 0 2023 12 02 03.0 04.50 33573.12500 33573.18750 4.000 27 0 2023 12 02 06.0 07.50 33573.25000 33573.31250 1.333 5 0 2023 12 02 09.0 10.50 33573.37500 33573.43750 0.667 3 0 2023 12 02 12.0 13.50 33573.50000 33573.56250 0.333 2 0 2023 12 02 15.0 16.50 33573.62500 33573.68750 1.000 4 0 2023 12 02 18.0 19.50 33573.75000 33573.81250 0.667 3 0 2023 12 02 21.0 22.50 33573.87500 33573.93750 1.333 5 0 2023 12 03 00.0 01.50 33574.00000 33574.06250 2.333 9 0 2023 12 03 03.0 04.50 33574.12500 33574.18750 3.000 15 0 2023 12 03 06.0 07.50 33574.25000 33574.31250 2.333 9 0 2023 12 03 09.0 10.50 33574.37500 33574.43750 1.667 6 0 2023 12 03 12.0 13.50 33574.50000 33574.56250 2.333 9 0 2023 12 03 15.0 16.50 33574.62500 33574.68750 3.333 18 0 2023 12 03 18.0 19.50 33574.75000 33574.81250 2.000 7 0 2023 12 03 21.0 22.50 33574.87500 33574.93750 1.667 6 0 2023 12 04 00.0 01.50 33575.00000 33575.06250 2.333 9 0 2023 12 04 03.0 04.50 33575.12500 33575.18750 2.667 12 0 2023 12 04 06.0 07.50 33575.25000 33575.31250 3.000 15 0 2023 12 04 09.0 10.50 33575.37500 33575.43750 2.667 12 0 2023 12 04 12.0 13.50 33575.50000 33575.56250 2.667 12 0 2023 12 04 15.0 16.50 33575.62500 33575.68750 1.667 6 0 2023 12 04 18.0 19.50 33575.75000 33575.81250 1.333 5 0 2023 12 04 21.0 22.50 33575.87500 33575.93750 1.000 4 0 2023 12 05 00.0 01.50 33576.00000 33576.06250 3.000 15 0 2023 12 05 03.0 04.50 33576.12500 33576.18750 3.333 18 0 2023 12 05 06.0 07.50 33576.25000 33576.31250 2.667 12 0 2023 12 05 09.0 10.50 33576.37500 33576.43750 3.000 15 0 2023 12 05 12.0 13.50 33576.50000 33576.56250 3.000 15 0 2023 12 05 15.0 16.50 33576.62500 33576.68750 3.000 15 0 2023 12 05 18.0 19.50 33576.75000 33576.81250 2.333 9 0 2023 12 05 21.0 22.50 33576.87500 33576.93750 3.000 15 0 2023 12 06 00.0 01.50 33577.00000 33577.06250 2.667 12 0 2023 12 06 03.0 04.50 33577.12500 33577.18750 2.667 12 0 2023 12 06 06.0 07.50 33577.25000 33577.31250 2.667 12 0 2023 12 06 09.0 10.50 33577.37500 33577.43750 2.333 9 0 2023 12 06 12.0 13.50 33577.50000 33577.56250 2.667 12 0 2023 12 06 15.0 16.50 33577.62500 33577.68750 3.000 15 0 2023 12 06 18.0 19.50 33577.75000 33577.81250 2.000 7 0 2023 12 06 21.0 22.50 33577.87500 33577.93750 1.667 6 0 2023 12 07 00.0 01.50 33578.00000 33578.06250 1.000 4 0 2023 12 07 03.0 04.50 33578.12500 33578.18750 1.000 4 0 2023 12 07 06.0 07.50 33578.25000 33578.31250 1.000 4 0 2023 12 07 09.0 10.50 33578.37500 33578.43750 1.000 4 0 2023 12 07 12.0 13.50 33578.50000 33578.56250 0.333 2 0 2023 12 07 15.0 16.50 33578.62500 33578.68750 0.667 3 0 2023 12 07 18.0 19.50 33578.75000 33578.81250 1.667 6 0 2023 12 07 21.0 22.50 33578.87500 33578.93750 2.333 9 0 2023 12 08 00.0 01.50 33579.00000 33579.06250 1.333 5 0 2023 12 08 03.0 04.50 33579.12500 33579.18750 0.333 2 0 2023 12 08 06.0 07.50 33579.25000 33579.31250 0.667 3 0 2023 12 08 09.0 10.50 33579.37500 33579.43750 0.667 3 0 2023 12 08 12.0 13.50 33579.50000 33579.56250 0.333 2 0 2023 12 08 15.0 16.50 33579.62500 33579.68750 1.333 5 0 2023 12 08 18.0 19.50 33579.75000 33579.81250 2.000 7 0 2023 12 08 21.0 22.50 33579.87500 33579.93750 1.333 5 0 2023 12 09 00.0 01.50 33580.00000 33580.06250 0.000 0 0 2023 12 09 03.0 04.50 33580.12500 33580.18750 0.000 0 0 2023 12 09 06.0 07.50 33580.25000 33580.31250 1.000 4 0 2023 12 09 09.0 10.50 33580.37500 33580.43750 0.000 0 0 2023 12 09 12.0 13.50 33580.50000 33580.56250 0.000 0 0 2023 12 09 15.0 16.50 33580.62500 33580.68750 0.333 2 0 2023 12 09 18.0 19.50 33580.75000 33580.81250 0.333 2 0 2023 12 09 21.0 22.50 33580.87500 33580.93750 0.000 0 0 2023 12 10 00.0 01.50 33581.00000 33581.06250 0.333 2 0 2023 12 10 03.0 04.50 33581.12500 33581.18750 -1.000 -1 0 2023 12 10 06.0 07.50 33581.25000 33581.31250 -1.000 -1 0 2023 12 10 09.0 10.50 33581.37500 33581.43750 -1.000 -1 0 2023 12 10 12.0 13.50 33581.50000 33581.56250 -1.000 -1 0 2023 12 10 15.0 16.50 33581.62500 33581.68750 -1.000 -1 0 2023 12 10 18.0 19.50 33581.75000 33581.81250 -1.000 -1 0 2023 12 10 21.0 22.50 33581.87500 33581.93750 -1.000 -1 0