condition mean min max ZT0-3 0.8952374999999999 0.6983175 1.0921575 ZT4-7 1.475425 1.475425 1.475425 ZT8-11 1.0649145 1.0649145 1.0649145 ZT12-15 0 0 0 ZT16-19 1.6974225 1.6974225 1.6974225 ZT20-23 1.503145 1.503145 1.503145