How are these numbers calculated?

Big Games

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

Wednesday, 3/14100.0*Chance in playoffs100.0*Average seed
MEL 6 OS 9 -15.0
-1.2
JPP 17 MEL 9 -13.0
-1.1
SPA 20 LO 19 -0.9
-0.1
HA 12 LO 14 +0.8
+0.0
EG 15 BF 24 +0.4
+0.1
EG 14 RS 15 +0.4
+0.1
JPP 14 OS 9 -0.2
+0.0
HA 15 SPA 16 -0.1
Monday, 3/19100.0*Chance in playoffs100.0*Average seed
OS 10 SPA 18 +0.2
EG 15 OS 19 Out
+0.2
MEL 16 HA 17 Out
-0.7
MEL 10 SAL 26 Out
-0.8
SAL 14 HA 13 +0.2
-0.0
JPP 25 QE 5 +0.1
+0.2
RS 18 QE 3 +0.2
EC 11 LO 23 +0.2
EC 11 BF 19 +0.2
Wednesday, 3/21100.0*Chance in playoffs100.0*Average seed
SPA 1 QE 0 +0.5
EG 12 SPA 25 +0.3
EG 18 JPP 24 +0.2
Games Above .500
Chance Will Make Playoffs