Ground-based magnetic local time dependent Pc5 ULF index dataset

This ULF index is constructed from 1-minute ground-based magnetic field observations provided by SuperMAG. The index is derived for the north (N) and east (E) magnetic field components from magnetometers on the northern hemisphere between 65 to 70 magnetic latitude and divided into four MLT sectors. The index is available from January 1995 to December 2023. The index is given in monthly files with following naming convention: Pc5_MLTd_index_LAT_65_70_YYYYMM_COMPONENT.dat 

date: YYYY-MM-DD 
time: hh:mm:ss 

P: Pc5 index in a given sector (nT^2)
N: number of SuperMAG stations used to calculate the index

Definition of MLT sectors:
Day: 6-18 MLT
Night: 18-6 MLT
Dawn: 3-9 MLT
Noon: 9-15 MLT
Dusk: 15-21 MLT
Midnight: 21-3 MLT
Full is the global average over all stations