Was looking at an upcoming flight and noticed the following:

BUCKET CLASSES: F1 P0 A0 E0 Y7 B7 M7 H7 V7 Q7 S7 L7 W7 T7

This is a 757-200 (capacity is between 190 and 240 according to Boeing).

Anyways, there are 10 fare classes that each have *at least* 7 seats available. 7 x 10 = 70. Would I be correct to assume that as of right now there are (at least) 70 empty seats on that flight?

More importantly with F showing 1, what do these numbers tell me about FC seat availability?