Originally Posted by herewego

Basic rule of thumb
if you're 90% or jr of qualified bidders in seat in a specific base you'll be full reserve line. If you're 80%-90% of qualified bidders in seat in a specific base you will probably get a composite line of a few trips and reserve days to take you to 75 hours.
if you're senior to 80%, of qualified bidders in seat in a specific base you'll probably get a real line.
The basic rule of thumb is modified by the bid information as mentioned at the above SWOL pages.
when you open up the PBS bid page it will show seniority list for your assigned base with some pilots as not bidding. Those pilots are either not qualified yet, on some type of leave, on medical hold, or more likely have put in their two weeks and will be gone by the time the month schedule starts.