condition mean min max ZT0-3 400.30898 400.30898 400.30898 ZT4-7 393.9166555 393.9166555 393.9166555 ZT8-11 148.03018550000002 148.03018550000002 148.03018550000002 ZT12-15 179.41762699999998 179.41762699999998 179.41762699999998 ZT16-19 50.0841815 50.0841815 50.0841815 ZT20-23 69.530553 69.530553 69.530553