condition mean min max ZT0-3 1418.37138 1418.37138 1418.37138 ZT4-7 472.5012875 472.5012875 472.5012875 ZT8-11 160.6852145 160.6852145 160.6852145 ZT12-15 205.69769150000002 205.69769150000002 205.69769150000002 ZT16-19 107.178668 107.178668 107.178668 ZT20-23 82.012638 82.012638 82.012638