# Status of the MAVLink time synchroniser std_msgs/Header header uint64 remote_timestamp_ns # remote system timestamp (nanoseconds) int64 observed_offset_ns # raw time offset directly observed from this timesync packet (nanoseconds) int64 estimated_offset_ns # smoothed time offset between companion system and Mavros (nanoseconds) float32 round_trip_time_ms # round trip time of this timesync packet (milliseconds)