How are these numbers calculated?

Big Games

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

Week of 1/12100.0*Chance in playoffs100.0*Average seed
Harlequins 18 Edinburgh 23 +30.2
+3.5
Treviso 0 Gloucester 41 -1.7
-0.1
Grenoble 31 Newcastle 27 +1.4
+0.1
Bristol 22 Bath 57 -0.6
Pau 21 Cardiff 22 -0.2
Bayonne 14 La Rochelle 24 -0.1
Brive 17 Worcester 14 -0.1
Dragons 34 Enisey 10 -0.1
If winner is:HomeDrawAway
Saracens vs Stade Français+1.3+1.4-0.2
+0.1+0.1-0.0
Ospreys vs Lyon+0.1*-0.0-0.4
-0.0-0.0+0.1
If winner is:HomeDrawAway
Week of 1/19100.0*Chance in playoffs100.0*Average seed
Edinburgh vs SaracensIn-10.6-58.2
+0.2-2.2-5.3
Cardiff vs Bristol-0.1+0.4+0.3
Lyon vs Grenoble-0.1+0.2+0.4
Bath vs Pau*+0.0-0.5-0.2
-0.0+0.3+0.4
La Rochelle vs Treviso-0.0*-0.0+0.2
Stade Français vs Harlequins-0.1+0.1+0.1
Newcastle vs Ospreys-0.1*-0.0+0.0
+0.1+0.0-0.0
Brive vs Dragons+0.1+0.1-0.1
Gloucester vs Bayonne-0.0+0.0+0.1

* 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 Edinburgh finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs1234567891011121314151617181920Count
201-0-0In11416541518,098,541
180-1-087.0%0137121152111200132,795
160-0-139.50044092222158544200000712,824
Total:97.6%11415521400111000000000018,944,160
Games Above .500
Chance Will Make Playoffs