condition mean min max ZT0-3 0.1209522 0.04199055 0.257762 ZT4-7 0.10128355 0.10128355 0.10128355 ZT8-11 0.16659245 0.16659245 0.16659245 ZT12-15 0.35685124999999995 0.323173 0.3905295 ZT16-19 0.375891 0.375891 0.375891 ZT20-23 0.3119385 0.3119385 0.3119385