How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Serie B100.0*Average seed
Avai 2 Palmeiras 1 -6.5
+0.6
Fluminense 2 Ponte Preta 0 -1.0
+0.1
Sport Recife 1 Bahia 0 +0.6
-0.2
Vitoria 1 Cruzeiro 1 -0.4
+0.0
Atletico-MG 3 Coritiba 0 -0.4
Atletico-GO 1 Chapecoense 1 +0.1
Week of 11/25100.0*Serie B100.0*Average seed
Avai 1 Atletico-PR 0 -18.1
+0.8
Ponte Preta 2 Vitoria 3 +3.7
Fluminense 1 Sport Recife 2 +3.5
-0.2
Coritiba 1 Sao Paulo 2 -1.4
+0.0
Gremio 1 Atletico-GO 1 +0.0
If winner is:HomeEmpateAway
Week of 12/3100.0*Serie B100.0*Average seed
Santos vs AvaiYesYes-42.1
-1.0-0.3+1.2
Vitoria vs Flamengo+11.1-6.8-6.7
-0.2+0.1+0.1
Chapecoense vs Coritiba-6.8-6.7+11.1
+0.1+0.1-0.2
Sport Recife vs Corinthians+11.1-6.8-6.7
-0.3+0.1+0.3
Vasco da Gama vs Ponte Preta+0.1+0.1-0.2

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleLibertadores1234567891011121314151617181920Serie BCount
451-0-0NoNo244427532.2%5,846,721
430-0-1NoNo3862Yes3,733,840
420-1-0NoNo6238Yes5,846,159
Total:NoNo91719411474.3%15,426,720
Points
Chance Will Win Championship