condition mean min max ZT0-3 2749.3832599999996 2669.510508 2829.256012 ZT4-7 1774.4317578 1307.9532846 2240.910231 ZT8-11 421.3736984 229.5474828 613.199914 ZT12-15 420.27745560000005 245.24346835 595.31144285 ZT16-19 893.208874525 858.1655611 928.25218795 ZT20-23 993.66810495 976.52381425 1010.81239565