"Pump" gas varies widely from brand to brand, from winter to summer, and from your favorite station to an identical one a few miles away.
Race gas is a lot more predictable.
If you are running a two-stroke, take your gas and have it tested before the run with and without two-stroke oil.
Oh, and fuel heating is costing you 3-9 cents a gallon. The pumps are calibrated for 60 degrees, and if it's warmer you get less than the pump reading. Billions a year is the estimate. It costs too much to put automatic temperature-compensation on the pumps they say.
Except in Canada where it is more often LESS than 60 degrees. All the pumps have automatic temperature-compensation. And so do the wholesalers in the U.S.