How are these numbers calculated?

Big Games

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

Week of 12/12100.0*Average seed
New Orleans 34 Indianapolis 7 +0.1
Green Bay 21 Chicago 13 -0.1
San Francisco 22 Atlanta 29 +0.1
Week of 12/22100.0*Average seed
Minnesota 10 Green Bay 23 -0.3
Tennessee 28 New Orleans 38 +0.2
San Francisco 34 LA Rams 31 -0.1
Week of 12/29100.0*Average seed
Seattle 21 San Francisco 26 -0.3
Detroit 20 Green Bay 23 -0.2
Carolina 10 New Orleans 42 +0.1
Games Above .500
Chance Will Make Playoffs