Key: 
Field 1: Line: Red, Orange or Blue.
Field 2: Trip: An integer uniquely identifying the trip.
Field 3: Platform key: A five-letter code identifying the platform. 
          The first letter indicates the line, and the last letter indicates the direction.
Field 4: Information type: Identifies whether the row is a prediction of an announcement
         ("Predicted") or identifies when the announcement took place ("Arrived.")
Field 5: Time: Indicates when the predicted time is or when the announcement occurred. 
Field 6: Remaining Time - Field 5 Minus Current Time
Field 7: Revenue: Indicates whether train is in revenue service. 
Field 8: Route: Indicates whether the route is "0" or "1." On the Red Line "0" 
         indicates service to/from/on the Braintree branch and "1" indicates 
         service to/from/on the Ashmont branch. On other lines Alternate may 
         indicate a special service pattern.

Examples:
Red, 370, RQUAS, Predicted, 9/17/2010 7:14:51 AM, 0:1:25,  Revenue, 0

On the Red Line, trip #370 is predicted to arrive at RQUAS (Quincy Adams 
Southbound) on 9/17/2010 at 7:14:51 AM, time remaining 0:1:25. It is on 
the "0" (Braintree) branch and is in revenue service.