trip_id,realtime_trip_id 6512143-CT-17JUL-Caltrain-Sunday-01,441u 6512144-CT-17JUL-Caltrain-Sunday-01,423u 6512145-CT-17JUL-Caltrain-Sunday-01,425u 6512146-CT-17JUL-Caltrain-Sunday-01,427u