condition mean min max ZT0-3 116.532654 116.532654 116.532654 ZT4-7 184.08140450000002 184.08140450000002 184.08140450000002 ZT8-11 202.677618 202.677618 202.677618 ZT12-15 184.5657695 184.5657695 184.5657695 ZT16-19 113.510625 113.510625 113.510625 ZT20-23 95.268813 95.268813 95.268813