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-3.4-1.4+6.6
-1.8-1.1+3.5
-0.2-0.0+0.4
Treviso vs Edinburgh-0.4+2.3+0.5
-0.1+0.8+0.0
Ospreys vs Dragons+1.1+1.0-1.5
+0.3+0.5-0.4
Scarlets vs Blues-0.3+0.9+1.0
+0.0+0.2-0.1
-0.0+0.1+0.1
Glasgow vs Kings+0.0*+0.0-0.1
Connacht vs Munster-0.1+0.2+0.0
Zebre vs Cheetahs-0.2+0.7+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 Leinster finish out the regular season.   Explain

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsERCC1234567Count
74-76InYes100349,839*
7214-0-1InYes10001,089,376*
7013-1-1InYes10001,289,923*
6813-0-2InYes100006,233,603
12-2-1InYes9910722,958*
6612-1-2InYes98207,224,065*
6412-0-3InYes973022,376,221
11-2-2InYes91903,633,258*
6211-1-3100.0%Yes88110022,662,343
10-3-2100.0Yes7623101,116,364*
6011-0-4100.0Yes85140053,178,830
10-2-3100.0Yes71272010,670,385*
5810-1-4100.0Yes663130048,454,994*
9-3-399.9Yes4645902,887,159*
5610-0-5100.0Yes61354088,602,251*
9-2-499.9100.0%4047120019,879,676*
8-4-398.9100.0225127100535,266
549-1-599.8100.03550150071,983,150*
8-3-498.3100.01749322004,934,754*
529-0-699.7100.030511900107,030,910*
8-2-597.7100.014473620026,111,695
7-4-489.899.6433531000792,868*
508-1-696.7100.011454130076,854,144
7-3-586.899.33285613105,664,998*
488-0-795.5100.08414640095,498,658
7-2-683.799.122457151024,354,688
6-4-560.790.409513360782,803*
467-1-779.998.622058191059,913,156*
6-3-655.186.90748378004,547,218*
447-0-875.897.9117582220063,516,495
6-2-749.382.5054440101016,874,644*
426-1-844.879.4044142121034,318,271
5-3-720.240.601204629502,574,452*
406-0-939.774.6033745141031,541,169
5-2-816.634.000164433708,144,855*
385-1-913.929.0001443358014,376,124
4-3-83.64.90425472411,018,033*
365-0-1011.323.80011403810011,614,164
4-2-92.63.40322472812,791,404*
344-1-101.92.20219463214,625,547*
324-0-111.41.60117463513,112,512
3-2-100.20.00532576661,619*
303-1-110.10.00429608966,637*
283-0-120.10.003246311690,843*
262-1-120.0No0096625133,991*
242-0-13OutNo07633083,242*
221-1-13OutNo01485110,859*
201-0-14OutNo144555,972*
180-1-14OutNo02377405
160-0-15OutNo01189171,929
Total:86.1%93.7%30292710310966,608,720

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs