condition mean min max ZT0-3 39.511900000000004 23.54345 51.4249 ZT4-7 25.3737 25.3737 25.3737 ZT8-11 22.1075 22.1075 22.1075 ZT12-15 25.240175 24.9076 25.57275 ZT16-19 34.1691 34.1691 34.1691 ZT20-23 51.90915 51.90915 51.90915