How are these numbers calculated?

Big Games

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

Week of 2/23100.0*Chance in playoffs100.0*Average seed
Philadelphia Bl 55 Indianapolis Ra 27 +8.8
+1.3
Charlestown Chi 33.4 Houston Aeros 37.6 -1.0
-0.1
Cleveland Crusa 37.8 Reagan's Whaler 52.8 -1.0
-0.1
Chicago Cougars 3.8 Quebec Nordiques 50.6 -0.7
New York Knights 60.4 Denver Spurs 38 +0.6
Toronto Toros 45.8 Cincinnati Stin 41.2 +0.5
Michigan Stags 29 Alberta Oilers 47.4 +0.1
Week of 3/2100.0*Chance in playoffs100.0*Average seed
Houston Aeros 54.4 New York Knights 44.4 -0.6
+0.1
Alberta Oilers 25.4 Philadelphia Bl 44.4 In
+1.2
Denver Spurs 34.4 Cleveland Crusa 51.6 +0.3
+0.1
Cincinnati Stin 47.8 Michigan Stags 37.2 -0.3
+0.1
Quebec Nordiques 54.6 Charlestown Chi 46 -0.2
-0.2
Reagan's Whaler 40.2 Chicago Cougars 42.4 +0.1
Phoenix Roadrun 19.6 Toronto Toros 60.6 -0.1
-0.2
Week of 3/9100.0*Chance in playoffs100.0*Average seed
Chicago Cougars 54.6 Philadelphia Bl 31.6 -1.1
Quebec Nordiques 58 Indianapolis Ra 36.8 -0.2
Cleveland Crusa 41.2 Michigan Stags 52.8 -0.2
Points
Chance Will Make Playoffs