condition mean min max ZT0-3 0.76643975 0.598409 0.9344705 ZT4-7 0.740892 0.740892 0.740892 ZT8-11 0.5259115 0.5259115 0.5259115 ZT12-15 0 0 0 ZT16-19 1.6953999999999998 1.6953999999999998 1.6953999999999998 ZT20-23 1.0769105 1.0769105 1.0769105