How are these numbers calculated?

Big Games

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

If winner is:HomeDrawAway
Week of 10/27100.0*Chance in playoffs100.0*ERCC100.0*Average seed
Ulster vs Leinster+9.7-4.9-9.2
+8.2-5.1-7.7
+0.4-0.2-0.4
Ospreys vs Dragons+1.4+1.2-1.6
+0.1+1.0-0.2
+0.1+0.0-0.1
Treviso vs Edinburgh*+0.0+2.6-0.2
-0.0+1.2-0.1
-0.0+0.1-0.0
Scarlets vs Blues-1.4+1.1+1.3
*+0.0+0.9-0.1
-0.1+0.1+0.1
Glasgow vs Kings+0.6+0.5-0.6
-0.0+0.6-0.0
Zebre vs Cheetahs-0.0+1.1-0.1
Connacht vs Munster-0.1+0.9+0.0

* 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 Ulster finish out the regular season.   Explain

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsERCC1234567Count
7615-0-0InYes10060,390
7414-1-0InYes10006,747
7214-0-1InYes100076,351*
7013-1-1InYes100096,658*
6813-0-2InYes1000561,890*
6612-1-2InYes9910638,407*
6412-0-3InYes99102,180,215
11-2-2InYes9820353,165*
6211-1-3InYes97302,583,661*
6011-0-4InYes96406,544,060*
10-2-3100.0%Yes9010001,305,086*
5810-1-4100.0Yes8812006,778,550
9-3-3100.0Yes7523100405,328*
5610-0-5100.0Yes85140014,389,065
9-2-4100.0Yes70272003,276,529*
549-1-599.9Yes663130013,548,434
8-3-499.3100.0%45441110914,533*
529-0-699.9100.0613540023,980,133*
8-2-598.7100.03846141005,916,635*
508-1-698.2100.033481720020,353,789*
7-3-591.099.815433381001,445,556
488-0-797.2100.028482130030,818,141*
7-2-687.399.6113937111007,659,639
6-4-564.491.23204228710240,679*
467-1-782.899.2835401520023,220,638
6-3-656.485.1216393210101,712,957*
447-0-877.898.6630421930030,823,323
6-2-748.878.3112363613207,659,480
5-4-620.428.60318393191239,351*
426-1-840.969.2193239183020,329,168
5-3-715.119.7021436361211,468,436*
406-0-933.759.4062740224023,972,276
5-2-810.812.7011032391725,914,950*
385-1-97.78.1017284121313,554,776
4-3-81.30.30112373911914,318*
365-0-105.24.8005244225414,382,265
4-2-90.70.100183343153,277,387*
344-1-100.40.100062946186,779,191
3-3-90.00.0001144739406,520*
324-0-110.20.00042548236,544,484
3-2-100.00.0011044451,305,434*
303-1-110.00.000841512,582,750*
283-0-120.0No00638562,181,202
2-2-11OutNo012375354,658*
262-1-12OutNo011980638,275*
242-0-13OutNo011584561,792*
221-1-13OutNo069496,536*
201-0-14OutNo049677,132*
180-1-14OutNo1996,822
160-0-15OutNo010060,354
Total:66.6%75.4%262218141063313,198,116

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs