Round Trip Taxi Time:		Normal value is 25+ minutes, based on Transtats data
Engine warm up and cool-down time:		5-6 minutes normal
Extra minutes of fuel loaded up in case taxiing takes longer than expected:
Net Fuel Burn (lbs/min):		14 normal for single engine 737-800 taxi, based on ICAO idling values + 15% for non-idle activity - APU burn of 3 lbs/min.
Price of Fuel:		per gallon
Flights/Day:		Normal for 737-800 is 3.75, based on Transtats data
Average Passenger Load:		115 normal for 737-800, based on Transtats data
Average Delay from Tug Incidents:		Unexpected tug arrival delays, broken bars, attachment/detachment delays etc... if 1 in 15 flights is delayed 15 minutes, this is a 1 minute average
Fleet size: