Originally Posted by web500sjc

“-2 months” means that the most junior lineholder this month is 2 months more senior than the junior line holder from last month. It indicates more senior people opting for a line instead of reserve, less lines in general, or a position becoming more senior than the previous month. Unless you know how many people that the line/reserve threshold actually moved, it is only a vague idea of how long it might take to hold a line.