Thanks, this is very informative.

I assume all these numbers are for solo riding as group riding would dramatically change the aerodynamic drag.

Would it then be ok to use these numbers to estimate watts? Obviously it would only be a very, very rough estimation and would only work on flat ground with no wind but it should still give you a reasonable number, correct?

I assume the W number includes all weight (bottles, shoes, clothes, tools, helmet, etc.)

So if everything altogether weighs 164 lbs and I'm riding on flat ground and wind is negligible can I assume when I'm riding at X speed, I'm producing approx. Y watts?

17 mph ~ 110 watts

20 mph ~ 167 watts

25 mph ~ 300 watts

26 mph ~ 335 watts

27 mph ~ 371 watts