Frequency bias estimation.
GLONASS alm corr.
GLONASS SV dir.
GLONASS SV steer.
GLONASS time.
GPS alm corr.
GPS SV dir.
GPS SV steer.
GPS time.
Health information.
Ionospheric data.
Position.
RTI.
SA data.
SBAS SV dir.
SBAS SV steer.
SV no exist.
Time.
UTC time.
Flags to use when deleting GNSS assistance data.
Since 1.22