How are these numbers calculated?

Big Games

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

If winner is:HomeAway
Week of 10/14100.0*Chance in playoffs100.0*Average seed
Columbus vs St. Louis-7.6+7.6
-0.8+0.8
Buffalo vs Quebec City+0.6-0.6
+0.1-0.1
Detroit vs Colorado+0.6-0.6
+0.1-0.1
Vegas vs Montreal-0.5+0.5
-0.1+0.1
San Jose vs Tampa Bay-0.5+0.5
-0.1+0.1
Arizona vs Pittsburgh-0.5+0.5
Calgary vs Washington-0.5+0.5
If winner is:HomeAway
Week of 10/21100.0*Chance in playoffs100.0*Average seed
St. Louis vs Boston+7.5-7.5
+0.8-0.8
Washington vs Chicago+0.6-0.6
+0.1-0.1
Dallas vs New York R-0.9+0.3
-0.1+0.0
Philadelphia vs Los Angeles+0.5-0.5
Colorado vs Columbus-0.5+0.5
-0.1+0.1
Montreal vs Vancouver+0.5-0.5
Tampa Bay vs Arizona+0.5-0.5

What If

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

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs12345678910111213141516Count
34-38In100729*
3216-3In9913,199
3015-4In9550013,969
2814-5In8117100045,177
2613-6In5036100300112,350
2412-7100.0%16322631751000218,505
2211-898.928207252111410000337,846
2010-978.90038817222013620000418,875
189-1028.70008026132022179310418,828
168-118.70800014102025201020337,485
147-127.7800014132732160218,690
126-137.58001932472112,487
105-147.880111582245,405
84-157.7802444613,927
63-167.58010823,120
42-1711.211287500
21-1810.31028858
00-191.7298178
Total:53.8%76777777777776612,301,328

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs