Before revision: Although not part of the RINEX format, the Hatanaka compression scheme is commonly used to reduced the size of RINEX files, resulting in an ASCII-based CompactRINEX or CRINEX format.
After revision: Although not part of the RINEX format, the Hatanaka compression scheme is commonly used to reduce the size of RINEX files, resulting in an ASCII-based CompactRINEX or CRINEX format.