condition mean min max ZT0-3 71.432078 71.432078 71.432078 ZT4-7 71.6416085 71.6416085 71.6416085 ZT8-11 89.8541795 89.8541795 89.8541795 ZT12-15 65.2566135 65.2566135 65.2566135 ZT16-19 74.685599 74.685599 74.685599 ZT20-23 70.5315425 70.5315425 70.5315425