condition mean min max ZT0-3 0.07401766666666666 0.0 0.222053 ZT4-7 4.170405e-09 4.170405e-09 4.170405e-09 ZT8-11 0.3705025 0.3705025 0.3705025 ZT12-15 0.896995 0.587985 1.206005 ZT16-19 0.000285962 0.000285962 0.000285962 ZT20-23 0.3131155 0.3131155 0.3131155