condition mean min max ZT0-3 0.5534414999999999 0.455885 0.650998 ZT4-7 0.6122259999999999 0.6122259999999999 0.6122259999999999 ZT8-11 3.5668300000000004 3.5668300000000004 3.5668300000000004 ZT12-15 0 0 0 ZT16-19 1.019913 1.019913 1.019913 ZT20-23 0.454596 0.454596 0.454596