condition mean min max ZT0-3 0.0421705 0.0421705 0.0421705 ZT4-7 0.0517755 0.0517755 0.0517755 ZT8-11 0.0210558 0.0210558 0.0210558 ZT12-15 0.0514315 0.0514315 0.0514315 ZT16-19 0.0224768 0.0224768 0.0224768 ZT20-23 0.0225275 0.0225275 0.0225275