After comparing the data in the SEPTA GTFS-rt with the live statuses of train in
SEPTA TrainView, it is clear that the GTFS-rt is measuring the "delay" value in the TripUpdate object in minutes, rather than seconds.
Evidence of this is attached. You will see in the pictures that according to TrainView, Wilmington train trip #214 is 2 minutes late. However, the delay in GTFS-rt for this trip is "2," indicating that the train is 2 seconds late. This pattern can be seen across all trains that appear on TrainView.
Thank you,
Zach