How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Average seed
Toronto 5 Detroit 4 (ot)-0.4
St Louis 3 Boston 4 (so)+0.3
NY Islanders 4 Chicago 5 (so)+0.1
New Jersey 4 Buffalo 5 (ot)-0.1
FridayNone
Saturday100.0*Average seed
Boston 1 Carolina 2 -1.7
NY Islanders 3 New Jersey 2 (so)-0.6
Toronto 3 Montreal 5 +0.5
Buffalo 1 Philadelphia 2 (ot)+0.3
Detroit 5 Tampa Bay 1 -0.2
Points
Chance Will Make Playoffs