condition mean min max ZT0-3 0.36571823049999996 0.09045466699999999 0.640981794 ZT4-7 0.185459059 0.074026829 0.296891289 ZT8-11 0.35978618625 0.28427782749999997 0.435294545 ZT12-15 0.31351634549999996 0.2859554365 0.3410772545 ZT16-19 0.328615386 0.2966405455 0.3605902265 ZT20-23 0.30774921075 0.304649594 0.3108488275