condition mean min max ZT0-3 172.098 172.098 172.098 ZT4-7 102.9565 102.9565 102.9565 ZT8-11 112.5855 112.5855 112.5855 ZT12-15 129.0545 129.0545 129.0545 ZT16-19 157.242 157.242 157.242 ZT20-23 134.41250000000002 134.41250000000002 134.41250000000002