condition mean min max ZT0-3 459.35 459.35 459.35 ZT4-7 713.5 713.5 713.5 ZT8-11 721.3 721.3 721.3 ZT12-15 349.15 349.15 349.15 ZT16-19 184.55 184.55 184.55 ZT20-23 328.15 328.15 328.15