Great day for a ride! 43 degrees, overcast, misty, wet roads, and a consistent 16 mph wind from the SE.
41 miles at an average wattage of 231, according to my iBike (though I bonked at mile 33).
It is impossible with current technology to simulate in indoor training the qualities of an outdoor ride - the wind, the heaviness and moisture content of the air, the bumps and gradations in the road, getting dropped by Jerry, etc.
UPDATE: According to PerfPro's analysis, my normalized power was 298 watts, and I averaged 300 watts for 20 minutes during the ride, which is 11 watts higher than my best ever lactate threshold test. Something must be wrong with my iBike.
FURTHER UPDATE: After sending the file for my ride to iBike, everything seems to be working properly.