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
Maryland 1 Northern Virginia 0 -5.8
-1.9
Nashville 0 West Virginia 0 +1.1
+0.1
West Virginia 2 Northern Virginia 0 Out
-0.1
Reading 4 Brooklyn 0 -0.4
+0.1
Ottawa 4 Worcester 0 -0.3
+0.1
Maryland 2 Carolina 4 +0.2
+0.1
NJ Rangers 3 Baltimore 2 -0.2
-0.0
West Virginia 1 Palmetto 1 +0.1
Fredericksburg 2 SW Virginia 1 -0.1
Bermuda 3 Long Island 1 +0.1
Brooklyn 1 Westchester 0 -0.1
Baltimore 3 Express 2 -0.1
Seacoast 1 Boston 1 +0.0
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Baltimore 2 Brooklyn 2 +1.6
Long Island 0 Express 2 +1.6
West-Texas 2 Texas 0 +1.5
Seacoast 0 Worcester 2 +1.4
Ottawa 1 Western Mass 1 +1.4
Vermont 2 Azul 4 +1.2
Carolina 1 Northern Virginia 1 +0.5
Ottawa 1 Azul 0 +0.2
Bermuda 2 Baltimore 1 +0.1
Virginia Beach 2 Northern Virginia 3 +0.1
Maryland 7 Fredericksburg 1 +0.1
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Palmetto 4 Northern Virginia 0 -2.2
Ocean City 1 Brooklyn 0 +0.2
Points
Chance Will Make Playoffs