condition mean min max ZT0-3 593.75 593.75 593.75 ZT4-7 455.3 455.3 455.3 ZT8-11 495.3 495.3 495.3 ZT12-15 639.55 639.55 639.55 ZT16-19 831.85 831.85 831.85 ZT20-23 789.3 789.3 789.3