How are these numbers calculated?

Big Games

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

Week of 3/31100.0*Chance in playoffs100.0*Average seed
San Antonio 7 Arizona 15 -8.9
-0.4
Salt Lake 8 San Diego 3 +1.3
+0.0
If winner is:HomeTieAway
Week of 4/7100.0*Chance in playoffs100.0*Average seed
San Antonio vs MemphisInIn-14.7
+0.3+0.2-0.3
Atlanta vs Salt Lake+9.2+9.2-9.3
+0.1+0.1-0.1
Orlando vs San Diego+3.1+3.1-3.1
+0.1+0.1-0.1
Arizona vs Birmingham-0.8-0.9+0.8
-0.1+0.1+0.1

What If

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

100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234Count
72-0-0In8119316,381,778
6.51-0-1In7525505,333
61-1-0In4456631,956,079
0-0-2In4951220
5.50-1-1In2575504,980
50-2-041.3%2404811316,368,570
Total:85.3%43431231,265,716,960
Games Above .500
Chance Will Make Playoffs