How are these numbers calculated?

Big Games

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

SaturdayNone
Sunday100.0*Pres Trophy
New York Islanders 4 New Jersey Devils 2 -10.2
Edmonton Oilers 3 Vancouver Canucks 4 (so)+8.1
Monday100.0*Pres Trophy
Ottawa Senators 2 New York Islanders 1 +54.7
Vancouver Canucks 4 Edmonton Oilers 2 +6.6
Points
Chance Will Make Playoffs