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
West Virginia 1 Palmetto 1 -0.4
Maryland 1 Northern Virginia 0 Out
+0.1
Nashville 0 West Virginia 0 +0.0
Reading 4 Brooklyn 0 +0.1
Ottawa 4 Worcester 0 +0.1
Baltimore 3 Express 2 -0.1
Brooklyn 1 Westchester 0 -0.1
NJ Rangers 3 Baltimore 2 +0.1
Virginia Beach 1 SW Virginia 3 -0.1
Carolina 2 Palmetto 0 -0.1
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Nashville 0 Palmetto 0 -0.6
Spartans 0 NJ Rangers 1 +0.3
Carolina 1 Northern Virginia 1 +0.3
Fredericksburg 0 Palmetto 1 +0.1
Bermuda 2 Baltimore 1 +0.1
Baltimore 2 Brooklyn 2 +0.0
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Palmetto 4 Northern Virginia 0 +1.3
Baltimore 2 Long Island 1 -0.3
Ocean City 1 Brooklyn 0 +0.3
Spartans 1 Reading 2 +0.2
Points
Chance Will Make Playoffs