condition mean min max ZT0-3 0.33123325 0.223297 0.4391695 ZT4-7 0.298218 0.298218 0.298218 ZT8-11 0.3742845 0.3742845 0.3742845 ZT12-15 0 0 0 ZT16-19 0.926381 0.926381 0.926381 ZT20-23 0.785227 0.785227 0.785227