condition mean min max ZT0-3 0.32300275 0.302127 0.3438785 ZT4-7 0.309456 0.309456 0.309456 ZT8-11 0.9986919999999999 0.9986919999999999 0.9986919999999999 ZT12-15 0 0 0 ZT16-19 0.8792115 0.8792115 0.8792115 ZT20-23 0.679724 0.679724 0.679724