Sugar is about 40 points per pound per gallon so 80 points divided by 5 gallons is 16 points. 1.062 plus .016 = 1.078...pretty close to the software calculation.
Something is always fermenting....
"It's Bahl Hornin'"
Kegged: Sour Saison, Pale Ale, Aggie Ale, Firestone DBA, De Koninck Blonde
Bottled: Belgian Quad (Grand Reserve), Derangement (Belgian Dark Strong)
On Deck: Pliny the Younger