How are the high-rate GPS data files stored?
High-rate GPS data files are available in hourly subdirectories within the filesystem /gps/hrdata/yyddd/yyt/hh, where yy is the two-digit year, ddd is the three-digit day of year, t is the file type (d or n), and hh is the numeric hour of the day (00, 01, … 23). High-rate data are stored in files containing fifteen minutes of data. All data are stored in the 2.20 enhancement to the RINEX format.