The two key things which are important to be noted while checking Live Train Status are "Last Reported Location" and "Estimated Time of Arrival (ETA) at upcoming stoppages"
The "Last Reported Station" signifies the station based on which the current live train running status is determined. The "Last Reported Station" also conveys that the train has either arrived or departed or crossed that particular station.
The "Estimated Time of Arrival (ETA)" value conveys the expected time at which the trains is supposed to arrive at any of its upcoming stoppages. This is the time when the traveler at the upcoming is expected to be there to board the train.