How are these numbers calculated?

Big Games

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

If winner is:HomeTieAway
Week of 3/21100.0*Chance in playoffs100.0*First-round bye100.0*Average seed
Charlotte vs Charleston-0.1+0.4-0.1
-0.1+0.3-0.1
Charleston vs Toronto-0.1+0.4-0.1
-0.1+0.3-0.1
If winner is:HomeTieAway
Week of 3/28100.0*Chance in playoffs100.0*First-round bye100.0*Average seed
Pittsburgh vs Harrisburg+8.9-1.8-7.8
+5.5-1.5-4.6
+0.7-0.2-0.6
Tulsa vs St Louis+0.6+0.2-0.7
+0.4+0.1-0.5
+0.1+0.0-0.1
Wilmington vs Richmond-0.1+0.4-0.1
-0.1+0.3-0.1
Wilmington vs Charlotte-0.1+0.4-0.1
-0.1+0.3-0.1
Montréal vs Toronto-0.1+0.4-0.1
-0.1+0.3-0.1
Louisville vs St Louis-0.1+0.4-0.1
-0.1+0.3-0.1
New York vs Rochester-0.1+0.4-0.1
-0.1+0.3-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inFirst-roundChance will finish regular season at seed
TPW-L-Tplayoffsbye123456789101112Count
69-84InYes100102,965*
6821-2-5InYes10008,174*
6721-3-4InYes100015,242*
6621-4-3InYes100027,221*
6520-3-5InYes100048,078*
6420-4-4InYes100082,651*
6320-5-3InYes1000138,287*
6219-4-5InYes1000225,177*
6119-5-4InYes1000360,069*
6018-4-6In100.0%9910560,152*
5918-5-5In100.09910852,533*
5818-6-4In100.098201,270,033*
5717-5-6In100.097301,847,165*
5617-6-5In100.0964002,632,619*
5517-7-4In99.9937003,672,607*
5416-6-6In99.890100005,033,750*
5316-7-5In99.48514106,737,643*
5215-6-7In98.779201008,844,913*
5115-7-6In97.2702730011,383,878*
5015-8-5In94.46034500014,354,158*
4914-7-7In89.549411010017,754,487*
4814-8-6100.0%81.6364516200021,534,872*
4714-9-5100.070.02545255000025,614,516*
4613-8-7100.055.015403310100029,892,949*
4513-9-6100.038.173139194000034,211,415*
4413-10-599.922.231938299100038,411,038*
4312-9-799.610.2193037194000042,297,869*
4212-10-698.23.50318363011200045,687,918*
4112-11-593.20.80172637236100048,431,185*
4011-10-780.80.100213323416300050,323,323*
3911-11-659.30.000041936291010051,285,865*
3810-10-834.30.00018263623610051,265,085*
3710-11-714.90.000021332341630050,260,403*
3610-12-64.8No0004193629101048,282,718*
359-11-81.1No000182737215045,463,110*
349-12-70.2No000315353312141,973,573*
339-13-60.0No00017264023437,943,412*
328-12-80.0No000021538351033,602,924*
318-13-70.0No001830431829,129,553*
308-14-60.0No000321463024,732,790*
297-13-80.0No000112444320,532,529*
287-14-7OutNo0007385516,674,835*
277-15-6OutNo0003306713,235,525*
266-14-8OutNo002227610,267,232*
256-15-7OutNo00116847,775,090*
246-16-6OutNo0010895,751,972*
235-15-8OutNo007934,142,453*
225-16-7OutNo04962,906,096*
215-17-6OutNo002981,987,898*
204-16-8OutNo01991,321,587*
194-17-7OutNo0199852,670*
184-18-6OutNo0100533,103*
174-19-5OutNo0100324,665*
163-18-7OutNo0100190,338*
153-19-6OutNo0100106,943*
143-20-5OutNo010058,708*
132-19-7OutNo010030,928*
122-20-6OutNo010015,577*
0-11OutNo100107,771*
Total:50.0%16.7%888888888888913,112,240

* Row combines multiple less frequent records.

Points
Chance Will Make Playoffs