condition mean min max ZT0-3 375.2445 375.2445 375.2445 ZT4-7 342.27 342.27 342.27 ZT8-11 288.842 288.842 288.842 ZT12-15 248.20749999999998 248.20749999999998 248.20749999999998 ZT16-19 396.546 396.546 396.546 ZT20-23 359.076 359.076 359.076