condition mean min max ZT0-3 149.001288 149.001288 149.001288 ZT4-7 185.344559 185.344559 185.344559 ZT8-11 84.77492649999999 84.77492649999999 84.77492649999999 ZT12-15 196.469798 196.469798 196.469798 ZT16-19 68.690846 68.690846 68.690846 ZT20-23 34.9930815 34.9930815 34.9930815