How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Chance in playoffs100.0*Average seed
Seacoast 1 Boston 1 -3.6
-1.3
Ottawa 2 Seacoast 0 -1.1
-0.1
Vermont 2 Portland Phoenix 4 -0.2
Maryland 2 Carolina 4 +0.2
+0.0
Ottawa 4 Worcester 0 -0.2
Reading 4 Brooklyn 0 -0.1
+0.1
Mississippi 1 Tampa 0 +0.1
West Virginia 1 Palmetto 1 +0.1
Hamilton 2 Forest City 4 -0.1
Western Mass 2 Azul 0 -0.1
Kitsap 2 North Sound 1 +0.1
Bermuda 3 Long Island 1 +0.2
NJ Rangers 3 Baltimore 2 -0.1
Baltimore 3 Express 2 -0.1
Nashville 0 West Virginia 0 +0.0
Maryland 1 Northern Virginia 0 +0.0
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Seacoast 0 Worcester 2 -1.1
Long Island 0 Express 2 +0.7
Baltimore 2 Brooklyn 2 +0.7
Carolina 1 Northern Virginia 1 +0.6
Vermont 2 Azul 4 +0.4
Bermuda 2 Baltimore 1 +0.2
Nashville 0 Palmetto 0 +0.1
Maryland 7 Fredericksburg 1 +0.1
Seacoast 0 Portland Phoenix 0 -0.0
Ottawa 1 Azul 0 +0.0
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Palmetto 4 Northern Virginia 0 +0.5
Nashville 5 Fredericksburg 0 +0.5
Ocean City 1 Brooklyn 0 +0.1
Points
Chance Will Make Playoffs