About Publication History Report
This report pertains to the roughly 9,000 NWS Cooperative Network sites whose observations are published in NCDC's Climatological Data or Hourly Precipitation Data publications. It is a compilation of elements observed and/or reported for all published stations in the Cooperative network. It uses repeating groups of details by station, data program, element and equipment.
The PHR replaces the legacy Climatological Data Master Station Index (CDMSI) and Hourly Precipitation Data Master Station Index (HPDMSI) and provides a more complete, historical view of element details.