How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Tafea 2 Hekari United 3 -20.3
-20.3
-1.8
Pirae 3 Lupe ole Soaga 3 +2.0
+2.0
+0.1
Suva 2 Amicale 3 -0.7
-0.7
+0.1
Auckland City 3 Western United 0 -0.6
-0.6
+0.0
Ba 3 Gaïtcha 0 -0.6
-0.6
-0.0
Team Wellington 2 Tefana 1 -0.5
-0.5
Western United 0 Amicale 1 -0.5
-0.5
-0.0
Hekari United 0 Team Wellington 2 +0.3
+0.3
Suva 0 Auckland City 3 -0.2
-0.2
-0.0
Ba 3 Lupe ole Soaga 1 +0.1
+0.1
+0.0
Gaïtcha 5 Pirae 2 +0.1
+0.1
-0.0
If winner is:HomeDrawAway
Tafea vs Team Wellington+31.0OutOut
+31.0NoNo
+3.0+0.7-0.7
Tefana vs TafeaOutOut+5.0
NoNo+5.0
-2.1-0.5+2.0
Tefana vs Hekari United+0.2+0.2-0.2
+0.2+0.2-0.2
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Amicale vs Auckland City-0.3-0.8+0.3
-0.3-0.8+0.3
Gaïtcha vs Lupe ole Soaga-0.3+0.3+0.3
-0.3+0.3+0.3
+0.1+0.0-0.1
Ba vs Pirae-0.0*-0.0+0.3
-0.0*-0.0+0.3
+0.1-0.1-0.5
Suva vs Western United-0.0+0.1-0.0

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

What If

Chances based on how well the Tafea finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
62-0-078.4%78.4%347291561895,097
41-1-0OutNo19503111,861,536
31-0-1OutNo11443012206,208,839
20-2-0OutNo73842131628,609
10-1-1OutNo1927322753,547,939
00-0-2OutNo43574,515,772
Total:4.0%4.0%021391914118171517,657,792
Points
Chance Will Make Playoffs