condition mean min max ZT0-3 5068.75 5068.75 5068.75 ZT4-7 4716.1 4716.1 4716.1 ZT8-11 4573.95 4573.95 4573.95 ZT12-15 3536.1000000000004 3536.1000000000004 3536.1000000000004 ZT16-19 4285.7 4285.7 4285.7 ZT20-23 6128.75 6128.75 6128.75