condition mean min max ZT0-3 2732.95 2732.95 2732.95 ZT4-7 3214.0 3214.0 3214.0 ZT8-11 2596.75 2596.75 2596.75 ZT12-15 2607.55 2607.55 2607.55 ZT16-19 2888.75 2888.75 2888.75 ZT20-23 2670.1000000000004 2670.1000000000004 2670.1000000000004