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 -0.1
+0.1
Grenoble 31 Newcastle 27 +0.1
If winner is:HomeDrawAway
Ospreys vs LyonInIn-1.7
+0.3+0.2-1.0
If winner is:HomeDrawAway
Week of 1/19100.0*Chance in playoffs100.0*Average seed
Newcastle vs Ospreys-2.0*-0.0In
-1.0-0.7+0.3
Lyon vs Grenoble-0.1-0.1In
-0.0-0.0+0.2
Edinburgh vs Saracens-0.0+0.1+0.1
+0.0-0.1-0.1
La Rochelle vs Treviso-0.0*+0.0+0.1
Cardiff vs Bristol-0.0+0.1+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 Ospreys finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs1234567891011121314151617181920Count
222-0-0In9730011,664,661
201-1-0In94500208,661
181-0-1In81134106,193,527
0-2-0In9370916
160-1-198.8%401031028124100055,112
140-0-288.88321137251253110000000821,283
Total:99.5%8861102110000000000018,944,160
Games Above .500
Chance Will Make Playoffs