condition mean min max ZT0-3 9.667925 9.595975 9.739875 ZT4-7 18.60605 18.60605 18.60605 ZT8-11 22.5809 22.5809 22.5809 ZT12-15 0 0 0 ZT16-19 20.4186 20.4186 20.4186 ZT20-23 13.46035 13.46035 13.46035