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
Treviso vs Edinburgh-9.0-5.5+9.5
-9.8-6.8+10.4
-0.4-0.2+0.5
Scarlets vs Blues-1.5+1.1+1.4
-0.0+1.0-0.1
-0.1+0.0+0.1
Ospreys vs Dragons+1.3+1.1-1.4
+0.1+1.3-0.2
+0.1+0.1-0.1
Ulster vs Leinster-0.2+2.4-0.1
-0.1+1.1-0.0
-0.0+0.1-0.0
Glasgow vs Kings+0.5+0.4-0.5
-0.1+0.7+0.0
+0.1+0.0-0.1
Zebre vs Cheetahs-0.0+1.3-0.1
Connacht vs Munster-0.1+1.1-0.0

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsERCC1234567Count
6815-0-0InYes100060,522
6614-1-0InYes10006,775
6414-0-1InYes99176,492*
6213-1-1InYes982096,606*
6013-0-2InYes9640563,008*
5812-1-2100.0%Yes891100638,659*
5612-0-3100.0Yes8713002,185,015*
11-2-2100.0Yes7325200349,015
5411-1-399.9Yes67293002,586,751*
5211-0-499.8100.0%63324006,565,378*
10-2-398.9Yes4145131001,276,702
5010-1-498.2100.03647162006,780,508
9-3-391.099.9154334810404,495*
4810-0-597.2100.030472030014,387,581*
9-2-487.499.8123937111003,274,992*
469-1-583.999.7936391420013,552,360
8-3-456.792.32164033910916,218*
449-0-678.999.3731411830023,983,597
8-2-549.686.6112363613105,914,140*
428-1-643.481.11103339162020,322,767
7-3-515.130.3011439361011,465,502*
408-0-736.472.5072941203030,820,178
7-2-611.722.5011136391317,660,849
6-4-51.81.1021643336239,463*
387-1-78.715.6018324117223,234,535
6-3-61.20.700113413781,711,461*
367-0-86.210.3006284321230,823,137
6-2-70.80.401113840107,656,501
5-4-60.00.002215126240,899*
346-1-80.50.2001835441320,319,671
5-3-70.00.0021850311,465,584*
326-0-90.30.1000631461723,970,770
5-2-80.00.0011549355,745,223
4-4-70.0No0053857171,604*
305-1-90.00.00112474113,551,922
4-3-8OutNo043562915,559*
285-0-100.00.0009444614,394,080
4-2-90.0No00331673,276,399*
264-1-10OutNo0227716,778,656
3-3-9OutNo001585405,201*
244-0-11OutNo0123756,541,526
3-2-10OutNo0012881,305,807*
223-1-11OutNo0010902,586,732*
203-0-12OutNo008922,181,048
2-2-11OutNo0397353,710*
182-1-12OutNo0298638,574*
162-0-13OutNo0298561,189*
141-1-13OutNo010096,788*
121-0-14OutNo010076,558*
8-10OutNo10067,409*
Total:31.1%41.6%6111417191914313,198,116

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs