condition mean min max ZT0-3 12064.25 12064.25 12064.25 ZT4-7 16348.8 16348.8 16348.8 ZT8-11 14775.4 14775.4 14775.4 ZT12-15 12277.9 12277.9 12277.9 ZT16-19 8448.05 8448.05 8448.05 ZT20-23 9742.7 9742.7 9742.7