condition mean min max ZT0-3 84.0 84.0 84.0 ZT4-7 150.8 150.8 150.8 ZT8-11 114.65 114.65 114.65 ZT12-15 105.25 105.25 105.25 ZT16-19 87.8 87.8 87.8 ZT20-23 80.35 80.35 80.35