Header String Content Description Units EarthquakeId Earthquake event ID in ComCat EarthquakeTime Earthquake origin time UTC EarthquakeLatitude Earthquke latitude demical degrees EarthquakeLongitude Earthquake longitude decimal degrees EarthquakeDepth Earthquake depth km EarthquakeMagnitude Earthquake magnitude EarthquakeMagnitudeType Earthquake magnitude type Network Network code DataProvider Data source provider StationCode Station code StationID The concatenated network code, station code, and instrument code StationDescription The station description StationLatitude Station latitude decimal degrees StationLongitude Station longitude decimal degrees StationElevation "Station elevation. If the elevation is not avaiable, this column will contain a 0." m SamplingRate Sampling rate of the record Hz EpicentralDistance Epicentral distance km HypocentralDistance Hypocentral distance km RuptureDistance Closest distance to the rupture plane km RuptureDistanceVar Variance of rupture distance estimate km^2 JoynerBooreDistance Joyner-Boore distance km JoynerBooreDistanceVar Variance of Joyner-Boore distance estimate km^2 BackAzimuth Site-to-source azimuth decimal degrees Lowpass Lowpass filter frequency Hz Highpass Highpass filter frequency Hz SourceFile The source file for the record DURATION 5-95% significant duration s GC2_rx Distance measured perpendicular to the fault strike from the surface projection of the up-dip edge of the fault plane km GC2_ry Distance measured parallel to the fault strike from the midpoint of the surface projection of the fault plane km GC2_ry0 Horizontal distance off the end of the rupture measured parallel to strike km GC2_U Strike-normal (U) coordinate, defined by Spudich and Chiou (2015; https://doi.org/10.3133/ofr20151028) km GC2_T Strike-parallel (T) coordinate, defined by Spudich and Chiou (2015; https://doi.org/10.3133/ofr20151028) km ztor Depth to top of rupture km Vs30_mps_CA_map Vs30 from the Thompson (2018) map for California (https://doi.org/10.5066/F7JQ108S) m/s Vs30_lnstd_CA_map Standard deviation of the Thompson (2018) Vs30 map in natural logarithmic units Vs30_mps_slope Sloped-based Vs30 (Wald and Allen, 2007) m/s Measured_VS30 Measured Vs30 from Seyhan et al. (2014) (https://doi.org/10.1193/062913EQS180M) m/s Measured_VS30_Sigma Standard deviation of the measured Vs30 estimate in natural logarithmic units NGA_Source_Station_Code NGA Source Station Code NGA_Source_Station_Name NGA Source Station Name NGA_Source_SSN NGA Source Station Sequence Number