condition mean min max ZT0-3 0.37447075 0.2158675 0.533074 ZT4-7 0.3813575 0.3813575 0.3813575 ZT8-11 1.78971 1.78971 1.78971 ZT12-15 0 0 0 ZT16-19 1.911435 1.911435 1.911435 ZT20-23 0.5873444999999999 0.5873444999999999 0.5873444999999999