condition mean min max ZT0-3 0.8704035 0.8704035 0.8704035 ZT4-7 0.55101 0.55101 0.55101 ZT8-11 0.5527895 0.5527895 0.5527895 ZT12-15 0.8151885 0.8151885 0.8151885 ZT16-19 1.534335 1.534335 1.534335 ZT20-23 0.926357 0.926357 0.926357