Average Speed Per Lap

My Traqmate GPS data is good for a lot of things, probably a lot more than I use it for.  But one of the neat things it'll calculate is the average speed per lap.  So I pulled up pretty much every track that I have data for and here's how they stacked up.  This is using my best lap at each. 

• 74 mph - Gingerman (Old) - TTB setup
• 77 mph - BlackHawk Farms - TTB setup
• 79 mph - Gingerman (Long)
• 81 mph - Autobahn
• 83 mph - Mid Ohio (Club)
• 85 mph - Putnam Park
• 85 mph - Gateway Int'l - TTB setup
• 86 mph - Mid Ohio (Pro)
• 89 mph - VIR Full - TTB setup
• 97 mph - Road America

Note my older TTB setup is usually 2-3 seconds per lap slower than my 2011 TTA setup.