condition mean min max ZT0-3 1.0160535 1.0160535 1.0160535 ZT4-7 0.672083 0.672083 0.672083 ZT8-11 0.674474 0.674474 0.674474 ZT12-15 1.48919 1.48919 1.48919 ZT16-19 1.63177 1.63177 1.63177 ZT20-23 1.0259550000000002 1.0259550000000002 1.0259550000000002