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 -4.6
-0.2
Treviso 0 Gloucester 41 -1.9
-0.1
Grenoble 31 Newcastle 27 +1.8
+0.1
Bristol 22 Bath 57 -1.0
Pau 21 Cardiff 22 -0.3
Bayonne 14 La Rochelle 24 -0.1
Brive 17 Worcester 14 -0.1
Dragons 34 Enisey 10 -0.1
If winner is:HomeDrawAway
Ospreys vs Lyon-8.5+7.9+29.7
-0.6+0.5+2.0
Saracens vs Stade Français+4.4+3.7-0.8
+0.2+0.1-0.0
If winner is:HomeDrawAway
Week of 1/19100.0*Chance in playoffs100.0*Average seed
Lyon vs Grenoble+4.6-12.9-25.6
+0.3-0.4-1.9
Cardiff vs Bristol-1.6+9.7+8.4
-0.0+0.2+0.1
Bath vs Pau+0.1-9.0-2.1
+0.0-0.2-0.1
Edinburgh vs Saracens-0.3+2.4+7.1
-0.0+0.1+0.3
La Rochelle vs Treviso-1.1-0.5+5.7
-0.0+0.0+0.1
Newcastle vs Ospreys+3.0+4.7-0.8
+0.6+0.7-0.2
Stade Français vs Harlequins-2.5+0.8+2.5
-0.1-0.0+0.1
Gloucester vs Bayonne-0.1*+0.3+4.6
-0.0+0.0+0.1
Worcester vs Enisey+0.4+3.5-0.1
+0.0+0.1-0.0
Brive vs Dragons-0.1+2.9*+0.0
-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 Lyon finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs1234567891011121314151617181920Count
182-0-075.9%5436212182518613,527,468
161-1-055.70012151433311220141,571
141-0-135.8310232516854420000012,991,571
0-2-032.6131442030903
120-1-117.00116292111656410000122,369
100-0-28.500818181298108222102,160,278
Total:40.2%11110410222314743431000018,944,160
Games Above .500
Chance Will Make Playoffs