condition mean min max ZT0-3 395.30898 395.30898 395.30898 ZT4-7 570.350509 570.350509 570.350509 ZT8-11 576.8187645 576.8187645 576.8187645 ZT12-15 729.374135 729.374135 729.374135 ZT16-19 520.203946 520.203946 520.203946 ZT20-23 344.50619600000005 344.50619600000005 344.50619600000005