RoboRumble result

What's the means of "APS","Survival","ELO Rating","Glicko-2(RD)","Battles","Pairings","PL Score" in the RoboRumble?And how to work out them?

"APS","ELO Rating","Glicko-2(RD)": Darkcanuck/RRServer/Ratings
Premier League: [1]

Survival - average it's percent of rounds where robot survive
Battles - it's count of battles in which robot takes part
Pairings - it's count of another robots with which robot has battles
PL Score - it's count of wins in pairings (score percent > 50) * 2

for example robot A has 2 battles with robot B with score percents (50, 60) and no battles with robot C. In this case APS will be 50 + 60 / 2 = 55; battles will be 2; pairing will be 2; PL Score will be 1 * 2 = 2

soga,thank you ^_^