What are players plus minus points in Pro Hockey?

Answer 1

The plus/minus is simply stating the players on the ice if a goal is scored.

For example, if a player is on the ice when their team scores then each of the players of that team on the ice get a plus, conversely, every player on the opposing team gets a minus.

So say for instance Mike Green is scores one night and is also on the ice when the opposing team scores a goal to tie it 1-1....then Mike Green's plus/minus score would be 0.