condition mean min max ZT0-3 30.104 30.104 30.104 ZT4-7 17.9165 17.9165 17.9165 ZT8-11 23.51765 23.51765 23.51765 ZT12-15 22.4724 22.4724 22.4724 ZT16-19 38.666 38.666 38.666 ZT20-23 39.911500000000004 39.911500000000004 39.911500000000004