How are these numbers calculated?

Big Games

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

Thursday100.0*Average seed
New Jersey 4 Buffalo 5 (ot)+0.7
Toronto 5 Detroit 4 (ot)-0.3
St Louis 3 Boston 4 (so)-0.3
FridayNone
Saturday100.0*Average seed
Detroit 5 Tampa Bay 1 -0.5
Boston 1 Carolina 2 +0.4
Buffalo 1 Philadelphia 2 (ot)-0.0
Points
Chance Will Make Playoffs