condition mean min max ZT0-3 110.7 110.7 110.7 ZT4-7 139.0 139.0 139.0 ZT8-11 103.65 103.65 103.65 ZT12-15 89.0 89.0 89.0 ZT16-19 129.6 129.6 129.6 ZT20-23 90.7 90.7 90.7