--gpsd Use gpsd compatible output

--copy-tagblock-timestamp = False

--encoding = msgpack Use msgpack encoding

--encoding = json Use json encoding (default)

--keep_nmea Include the raw nmea as a field in the decoded output

--verbose

--max_errors = NUM Terminate if error rate is > NUM%.

--allow_unknown

--ignore_tagblock_station

--treat_ab_equal

--pass_invalid_checksums

--allow_missing_timestamps

--uscg = False

--validate_checksum = False