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*Average seed
Charlestown Chi 33.4 Houston Aeros 37.6 -0.2
Michigan Stags 29 Alberta Oilers 47.4 -0.1
Week of 3/2100.0*Average seed
Quebec Nordiques 54.6 Charlestown Chi 46 -0.1
Alberta Oilers 25.4 Philadelphia Bl 44.4 +0.0
Week of 3/9None
Points
Chance Will Make Playoffs