condition mean min max ZT0-3 1959.7 1959.7 1959.7 ZT4-7 1695.5 1695.5 1695.5 ZT8-11 1798.75 1798.75 1798.75 ZT12-15 1679.2 1679.2 1679.2 ZT16-19 2102.6499999999996 2102.6499999999996 2102.6499999999996 ZT20-23 2075.55 2075.55 2075.55