condition mean min max ZT0-3 0.09711075 0.056104 0.1381175 ZT4-7 0.1952805 0.1952805 0.1952805 ZT8-11 0.44766150000000005 0.44766150000000005 0.44766150000000005 ZT12-15 0 0 0 ZT16-19 0.08296355 0.08296355 0.08296355 ZT20-23 0.055438799999999996 0.055438799999999996 0.055438799999999996