condition mean min max ZT0-3 103.645028 103.645028 103.645028 ZT4-7 117.85796400000001 117.85796400000001 117.85796400000001 ZT8-11 119.32594549999999 119.32594549999999 119.32594549999999 ZT12-15 115.2650795 115.2650795 115.2650795 ZT16-19 131.4135335 131.4135335 131.4135335 ZT20-23 115.237472 115.237472 115.237472