condition mean min max ZT0-3 680.15 680.15 680.15 ZT4-7 775.7 775.7 775.7 ZT8-11 736.9000000000001 736.9000000000001 736.9000000000001 ZT12-15 966.1500000000001 966.1500000000001 966.1500000000001 ZT16-19 954.75 954.75 954.75 ZT20-23 750.6 750.6 750.6