condition mean min max ZT0-3 0.534235 0.352602 0.713219 ZT4-7 0.174494 0.174494 0.174494 ZT8-11 0.708075 0.708075 0.708075 ZT12-15 0.7498987500000001 0.588095 0.9117025 ZT16-19 0.8315365 0.8315365 0.8315365 ZT20-23 0.341411 0.341411 0.341411