Fueling & Injection - 99 ls1 camaro Fuel level sensor range.

I have heard about 2 different things.... 40-250, 0-90, and both backwards.

I need to know which it is and which level of resistance is empty and which is full. Yes I searched and that is what I found.

Small number is empty, big number is full on both.
40-250 is for the 99 up.