How are these numbers calculated?

Big Games

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

Week of 3/1100.0*Chance in playoffs100.0*Average seed
Tampa Bay 25 DC 0 +10.9
+0.3
New York 17 LA 14 -2.8
-0.1
St Louis 23 Seattle 16 -1.8
-0.0
Dallas 20 Houston 27 -0.1
-0.0
If winner is:HomeTieAway
Week of 3/8100.0*Chance in playoffs100.0*Average seed
LA vs Tampa Bay-8.2-5.1+8.2
-0.2-0.1+0.2
Dallas vs New York+3.4*-0.1-3.4
+0.1*-0.0-0.1
DC vs St Louis-0.1-5.4+0.1
-0.0-0.1+0.0
Houston vs Seattle+0.2*-0.9-0.2

* 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 Tampa Bay finish out the regular season.   Explain

100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234Count
76-0-0In982153,217
6.55-0-199.9%85150676
65-1-097.359393899,848
4-0-2In1001
5.54-1-180.220601903,658
54-2-056.89483942,251,224
3-1-260.060405
4.53-2-115.601557277,393
43-3-07.60849443,001,256
2-2-220.02020605
3.52-3-10.4020797,063
32-4-00.2013872,253,336
1-3-2Out14867
2.51-4-1Out2983,518
21-5-0Out199902,403
0-4-2Out1002
1-1.5Out100154,324*
Total:26.4%91728469,637,936

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs