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+9.2-5.2-8.8
+10.3-6.6-9.6
+0.5-0.2-0.4
Scarlets vs Blues-1.5+1.1+1.4
-0.0+1.1-0.1
-0.1+0.0+0.1
Ospreys vs Dragons+1.2+1.0-1.3
+0.1+1.3-0.2
+0.1+0.1-0.1
Ulster vs Leinster-0.1+2.2-0.2
-0.0+1.0-0.1
-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-0.1+1.3-0.1
Connacht vs Munster-0.1+1.1-0.0

* 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 Treviso finish out the regular season.   Explain

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsERCC1234567Count
6815-0-0InYes100060,480
6614-1-0InYes10006,866
6414-0-1InYes100076,968*
6213-1-1InYes982096,996*
6013-0-2InYes9730561,809*
5812-1-2100.0%Yes901000637,256*
5612-0-3100.0Yes8712002,183,263*
11-2-2100.0Yes7424200353,955*
5411-1-399.9Yes68293002,587,119*
5211-0-499.8100.0%63324006,572,069*
10-2-398.9100.04245131001,277,664
5010-1-498.1100.03546172006,778,493
9-3-391.199.9154333810406,520*
4810-0-596.9100.029472130014,384,598
9-2-486.899.7123937121003,278,828*
469-1-582.599.6935391520013,555,013
8-3-456.290.721639331010917,205*
449-0-676.799.0630412030023,968,482
8-2-547.683.9112353714205,919,922*
428-1-640.577.3193139183020,324,666
7-3-514.327.7011337361211,464,433*
408-0-732.967.5062741224030,821,123
7-2-610.619.4011034391517,659,269
6-4-51.71.20021642356239,938*
387-1-77.512.6017294220223,227,906
6-3-61.10.600112393991,710,685*
367-0-85.17.7005254324330,818,683
6-2-70.70.300193643127,659,363
5-4-60.00.002195128240,585*
346-1-80.40.1000732461520,324,759
5-3-70.00.0011550331,466,340*
326-0-90.20.1000528491823,971,674
5-2-80.00.00011249385,918,671*
305-1-90.00.00110474313,548,635
4-3-8OutNo033463915,497*
285-0-100.00.0008454714,385,613
4-2-90.0No00230683,280,873*
264-1-10OutNo0127716,781,455
3-3-9OutNo001585404,577*
244-0-11OutNo0124756,540,462
3-2-10OutNo0013871,305,977*
223-1-11OutNo0011892,586,622*
203-0-12OutNo09912,180,995
2-2-11OutNo0496353,652*
182-1-12OutNo0397639,482*
162-0-13OutNo0298562,647*
141-1-13OutNo19996,160*
121-0-14OutNo010076,602*
100-1-14OutNo01006,777
80-0-15OutNo010060,489
Total:30.0%40.3%6101417192015313,198,116

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs