How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 2/11100.0*Chance in playoffs100.0*Average seed
River East Whit 9 Seven Oaks Blac 2 In
FG White 8 A West 2 -0.4
River East Grey 4 Transcona 1 +0.1
Sturgeon 1 Kirkfield 10 -0.1
Lord Selkirk 0 St. Boniface Re 6 +0.1
Dakota W 4 Dakota B 12 +0.0
SWHA 7 Sturgeon 2 -0.0
Week of 2/18100.0*Chance in playoffs100.0*Average seed
C4 Cardinals 2 A West 8 +0.4
Seven Oaks Blac 2 Lord Selkirk 7 -0.2
Seven Oaks Whit 4 Transcona 0 +0.1
Kirkfield 2 FG White 5 +0.1
Springfield 1 River East Whit 4 +0.0
Week of 2/25100.0*Chance in playoffs100.0*Average seed
Norberry G 1 FG White 7 +0.1
Points
Chance Will Make Playoffs