condition mean min max ZT0-3 7760.2 7760.2 7760.2 ZT4-7 12849.6 12849.6 12849.6 ZT8-11 10539.5 10539.5 10539.5 ZT12-15 5454.8 5454.8 5454.8 ZT16-19 1892.75 1892.75 1892.75 ZT20-23 3602.0 3602.0 3602.0