How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Tuesday100.0*Chance in playoffs100.0*Average seed
Celtics 96 Heat 103 -0.1
-0.5
Celtics 108 Nets 123 -0.1
-0.5
Magic 108 Knicks 112 -0.2
Wizards 104 Knicks 85 +0.2
Bucks 87 Knicks 95 -0.2
Knicks 122 Clippers 114 -0.1
Grizzlies 123 Bulls 85 +0.0
Saturday100.0*Chance in playoffs100.0*Average seed
Wizards 113 Celtics 106 -0.4
Knicks 105 Trailblazers 108 +0.4
Jazz 105 Celtics 95 -0.4
Wizards 95 Celtics 118 +0.4
Knicks 136 Warriors 102 -0.3
Celtics 94 Cavaliers 89 +0.2
Knicks 102 Wizards 99 -0.2
Bulls 111 Nets 114 +0.2
Bulls 112 Suns 105 -0.1
Bulls 108 Magic 103 -0.1
Spurs 108 Bulls 121 -0.1
Games Above .500
Chance Will Make Playoffs