condition mean min max ZT0-3 734.9 734.9 734.9 ZT4-7 844.5 844.5 844.5 ZT8-11 821.05 821.05 821.05 ZT12-15 785.9 785.9 785.9 ZT16-19 831.2 831.2 831.2 ZT20-23 871.85 871.85 871.85