Unknown type C0 reading Rinex files
Within ftp://igs.ensg.ign.fr/pub/igs/data/2016/044/GAMB00PYF_R_20160440000_01D_30S_MO.crx.gz header, in GLONASS observation type there is a "C0" which is unkown for the RINEX loader. In RINEX format (ftp://igs.org/pub/data/format/rinex303.pdf) table 5 gives the GLONASS observations code, it does not refer to "C0".