condition mean min max ZT0-3 3310.5 3310.5 3310.5 ZT4-7 3846.0 3846.0 3846.0 ZT8-11 3908.45 3908.45 3908.45 ZT12-15 3842.8999999999996 3842.8999999999996 3842.8999999999996 ZT16-19 3778.7 3778.7 3778.7 ZT20-23 3412.3999999999996 3412.3999999999996 3412.3999999999996