15-Minute Precipitation Data Inventory is digital data set DSI-3360 archived at the National Climatic Data Center (NCDC). This data set is the inventory of digital data set DSI-3260, 15-Minute Precipitation Data, also archived at NCDC. Major parameters are the station identification, year of data being inventoried, number of missing days of 15-minute precipitation, and number of days of flagged ... data. Header Records - Each header record contains the observing station identification, the most current station name, the name of the state where the station is located, the first year of 15-minute precipitation data observations, and the last year of 15-minute precipitation data observations. Elements Observed Records - Each elements observed record contains the observing station identification and a list of the elements observed at that station over the stations period of record. Inventory Records - Each inventory record contains the observing station identification, year of 15-minute precipitation data inventoried, name of element inventoried, number of missing days of 15-minute precipitation data for each month, and number of days of 15-minute precipitation data flagged for each month. Each inventory record represents the inventory for one year for one element observed of 15-minute precipitation data. Missing Data - A day of 15-minute precipitation data is counted as missing when there is no 15-minute precipitation data value present for any quarter hour of the day. The 15-minute precipitation data for the entire day is in a missing period, a deleted period, an accumulation period, or any combination of missing/deleted/accumulation periods (See documentation for DSI-3260). Flagged Data - A day of 15-minute precipitation data is counted as flagged when there is at least one 15-minute flag representing the beginning or ending of a missing period, a deleted period, or an accumulation period (See documentation for DSI-3260).