Processed Multi-GNSS PWV, ERA5 Comparison, and Rainfall-Event Data over Beijing–Tianjin–Hebei

This dataset contains processed hourly multi-GNSS precipitable water vapor (PWV), archived ERA5-PWV comparison data, time-provenance audits, rainfall-event summaries, spatial sensitivity results, 300 dpi figures, and reproducibility code for 36 stations in Beijing–Tianjin–Hebei during a July–August 2023 Doksuri-related event. The upstream zenith total delay product was reported as a combined GPS/GLONASS/Galileo/BeiDou precise point positioning solution. The archive includes 17,393 uniformly reprocessed GNSS-PWV values and 16,722 pairwise-finite GNSS–ERA5 observations. Two ERA5 workbook-label conventions were identified independently: nine CST-style-labelled workbooks and 27 UTC-labelled workbooks. Eighteen co-located rainfall series are included for event description only. The public archive does not redistribute provider-controlled source workbooks, original CORS/RINEX observations, unavailable PPP configuration or logs, rainfall records for the remaining 18 stations, or the unavailable code used to generate the archived ERA5-PWV magnitude.