How are these numbers calculated?

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 12/12100.0*Lottery seed
Washington 27 Philadelphia 37 +0.6
Arizona 38 Cleveland 24 +0.2
San Francisco 22 Atlanta 29 +0.2
Oakland 16 Jacksonville 20 +0.2
NY Giants 36 Miami 20 -0.1
LA Chargers 10 Minnesota 39 -0.1
Detroit 17 Tampa Bay 38 -0.1
Dallas 44 LA Rams 21 -0.1
New Orleans 34 Indianapolis 7 -0.0
Carolina 24 Seattle 30 +0.0
Cincinnati 13 New England 34 -0.0
Week of 12/22100.0*Lottery seed
Washington 35 NY Giants 41 +1.0
Miami 38 Cincinnati 35 (ot)+0.1
Indianapolis 38 Carolina 6 +0.1
Denver 27 Detroit 17 -0.1
LA Chargers 17 Oakland 24 -0.1
Chicago 3 Kansas City 26 +0.0
Seattle 13 Arizona 27 +0.0
San Francisco 34 LA Rams 31 -0.0
NY Jets 16 Pittsburgh 10 +0.0
Week of 12/29100.0*Lottery seed
Dallas 47 Washington 16 +0.2
NY Giants 17 Philadelphia 34 -0.1
Detroit 20 Green Bay 23 -0.0
Games Above .500
Chance Will Make Playoffs