condition mean min max ZT0-3 0.4184053333333333 0.0 0.8368106666666666 ZT4-7 0.43141199999999996 0.43141199999999996 0.43141199999999996 ZT8-11 0.0 0.0 0.0 ZT12-15 0.25157 0.0 0.50314 ZT16-19 0.385 0.385 0.385 ZT20-23 0.0 0.0 0.0