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 +5.9
+1.1
Charlestown Chi 33.4 Houston Aeros 37.6 -0.7
-0.0
Cleveland Crusa 37.8 Reagan's Whaler 52.8 -0.7
-0.1
Chicago Cougars 3.8 Quebec Nordiques 50.6 -0.6
New York Knights 60.4 Denver Spurs 38 +0.5
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
Alberta Oilers 25.4 Philadelphia Bl 44.4 In
+1.0
Houston Aeros 54.4 New York Knights 44.4 -0.3
+0.1
Denver Spurs 34.4 Cleveland Crusa 51.6 +0.2
Cincinnati Stin 47.8 Michigan Stags 37.2 -0.2
+0.2
Quebec Nordiques 54.6 Charlestown Chi 46 -0.1
-0.1
Phoenix Roadrun 19.6 Toronto Toros 60.6 -0.2
Week of 3/9100.0*Chance in playoffs100.0*Average seed
Chicago Cougars 54.6 Philadelphia Bl 31.6 -1.0
Quebec Nordiques 58 Indianapolis Ra 36.8 -0.2
Cleveland Crusa 41.2 Michigan Stags 52.8 -0.1
New York Knights 46.6 Toronto Toros 51 -0.1
Points
Chance Will Make Playoffs