> Glasses were converted to UK units as follows: red or white wine = 1.7 units; fortified wine=1.2 units; pint = 2.4 units; spirits = 1 unit; other (e.g. alcopops) = 1.2 units. Amounts were also converted to grams pure ethanol (1 UK unit=8g) to aid international comprehension and comparison.

Can someone explain these numbers to me? They claim to measure one “standard drink” (all of which are equal), yet each variant is a different number of units? Furthermore, wine is more (stronger?) than spirits? I must be missing something.