How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Wednesday100.0*Chance in playoffs100.0*Average seed
Nashville 5 St Louis 3 +29.9
+0.3
Arizona 3 Colorado 1 -28.5
-0.6
Vegas 1 Anaheim 3 +0.1
Thursday100.0*Chance in playoffs100.0*Average seed
Calgary 2 San Jose 3 (so)-0.1
Friday100.0*Chance in playoffs100.0*Average seed
Toronto 1 Colorado 3 In
+0.7
Calgary 3 Anaheim 4 (so)+0.2
Points
Chance Will Make Playoffs

Lottery

Why are you looking down here? We just made the playoffs!

Big Games

Wednesday100.0*Lottery seed
Arizona 3 Colorado 1 +1.9
Nashville 5 St Louis 3 -1.0
Washington 3 NY Rangers 4 (ot)+0.2
Buffalo 1 NY Islanders 5 +0.1
Vegas 1 Anaheim 3 -0.1
Thursday100.0*Lottery seed
Montreal 2 Tampa Bay 1 (ot)+0.2
Philadelphia 1 Florida 3 +0.2
Calgary 2 San Jose 3 (so)+0.1
Boston 2 Washington 3 (so)+0.0
Friday100.0*Lottery seed
Toronto 1 Colorado 3 -4.0
Calgary 3 Anaheim 4 (so)-0.2