condition mean min max ZT0-3 142.75 142.75 142.75 ZT4-7 905.8 905.8 905.8 ZT8-11 1085.1999999999998 1085.1999999999998 1085.1999999999998 ZT12-15 1298.9 1298.9 1298.9 ZT16-19 552.5 552.5 552.5 ZT20-23 157.4 157.4 157.4