Just an FYI for new users: In the RINEX for these lines: *|PRN / # OF OBS | PRN (sat.number), number of observations |3X,A1,I2,9I6|* | | for each observation type indicated | | | | in the "# / TYPES OF OBSERV" - record. | | For current GLONASS SVs, which are FDMA and not CDMA, "PRN" is really a misnomer and here refers the the GLONASS slot #, as usual. --lou