condition mean min max ZT0-3 0.0106386 0.0106386 0.0106386 ZT4-7 0.0085701 0.0085701 0.0085701 ZT8-11 0.03513825 0.03513825 0.03513825 ZT12-15 32.680749999999996 32.680749999999996 32.680749999999996 ZT16-19 8.52657 8.52657 8.52657 ZT20-23 0.952102 0.952102 0.952102