PPSD_30s.zip - The archive contains PPSDs computed for the period from 2023-01-01 to 2024-01-01 for the Z-component data from Guralp 6T/40T sensors with an instrument period range extending to at least 30 s.

PPSD_60s.zip - The archive contains PPSDs computed for the period from 2023-01-01 to 2024-01-01 for the Z-component data from Guralp 6T/40T sensors with an instrument period range extending to at least 30 s.

PPSD_sensor_replacement.zip - The archive contains PPSDs computed from Z-component data at stations where Guralp 6T/40T sensors were replaced by broadband sensors from other manufacturers. The PPSDs were calculated over one-year intervals before and after the replacement.

Station_list.xlsx - Parameters of the stations used for PPSD computation.