GNSS TEC and IVM data

The uploaded data include GPS and GLONASS vertical total electron content (VTEC), along with latitude, longitude, and elevation angle measurements for 21 June 2022 and 25 May 2023. The TEC data are sampled at 30-second intervals, comprising 2,880 epochs per day. The dataset is structured in three dimensions: epochs, satellites, and ground stations. Separate MATLAB .mat files are provided for each GNSS constellation.
The TEC data for 25 May 2023, which were used in the main manuscript figures, are provided in the following files mapped to 300 km and 450 km altitude over the Korea, Taiwan, and Japan regions:
GPSTEC_ipp300_20230525_Korea.mat, GPSTEC_ipp300_20230525_Taiwan.mat, GPSTEC_ipp300_20230525_Japan.mat,
GPSTEC_ipp450_20230525_Korea.mat, GPSTEC_ipp450_20230525_Taiwan.mat, GPSTEC_ipp450_20230525_Japan.mat
The TEC data for 21 June 2022, which were used in Figures S1-S3, are also provided in the same format with filenames indicating the corresponding region and altitude.

The FORMOSAT-7/COSMIC-2 IVM data have been uploaded as two netCDF files, ivm_rocket_20220115.nc and ivm_rocket_20230525.nc. Each file contains the following variables: IVMut, IVMlon, IVMlat, IVMalt, IVMdensity, IVMtemperature, IVMzonal, IVMparallel, IVMperpendicular, and IVMlocaltime. Specifically, IVMut denotes Universal Time (UT) in hours; IVMlon, IVMlat, and IVMalt represent longitude, latitude, and altitude (km), respectively; IVMdensity and IVMtemperature represent ion density (cm⁻³) and ion temperature (K), respectively. IVMzonal, IVMparallel, and IVMperpendicular correspond to the three components of ion drift velocity relative to the magnetic field lines. IVMlocaltime represents the local time (hours).