NHRA (IHRA?) stock eliminator - Fees? for 23.47 Weight break ??

15.96 is the bottom of O.
You can remove up to like 200lbs to get closer to the top of the class, or add weight to get to the top of the next slower class.
The top of O would be:
250 x 15 = 3750 + 170 = 3920
That’s more weight than you’re allowed to remove, but if you took off what was allowed you’d be a lot closer to the top of the class.