How are these numbers calculated?

Big Games

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

Week of 2/7100.0*Average seed
Bow River 5 Southwest 3 -0.5
Glenlake 2 Trails West White 0 +0.1
Trails West Red 3 Bow Valley 0 -0.0
Springbank 4 Blackfoot 0 -0.0
Simons Valley 3 Northwest 6 -0.0
Blackfoot 0 Trails West White 4 -0.0
McKnight 0 Glenlake 4 -0.0
Knights White 3 Bow River 5 +0.0
Trails West White 1 Crowfoot 4 +0.0
Knights Grey 1 Knights White 4 -0.0
Week of 2/13100.0*Average seed
Northwest 3 Southwest 4 +0.9
Knights Grey 2 Southwest 5 +0.8
Southwest 4 Blackfoot 1 +0.4
Trails West Red 1 Bow River 2 +0.1
Trails West White 7 McKnight 5 -0.1
McKnight 1 Trails West Red 6 -0.1
Springbank 3 Glenlake 4 +0.1
Simons Valley 2 Crowfoot 8 -0.0
Knights White 2 Blackfoot 2 -0.0
Glenlake 11 Simons Valley 1 -0.0
Week of 2/20100.0*Average seed
Southwest 3 Crowfoot 1 +1.6
Knights White 4 Glenlake 1 -0.4
Springbank 3 Trails West White 5 +0.3
Trails West Red 4 Knights Grey 2 -0.2
Crowfoot 2 Knights White 0 +0.1
Games Above .500
Chance Will Make Playoffs