IIRC, an normal 9-5 M-F worker gets a score of about 40 each week.
but we're shift workers, and somehow tougher, so
we're allowed to be twice as tired and still "be okay"
BTW, every roster I've ever worked/been involved in, all have tend to have an acquittal period (average out) of 6 to 12 weeks - and nearly every one gets close to the magical number of 80 at least once in the aforementioned period.
and thats before you work any overtime.
let alone, say 2 extra shifts (out of the 5) that I've been offered over the last two days.
