condition mean min max ZT0-3 5.3189825 4.96561 5.672355 ZT4-7 7.574059999999999 7.574059999999999 7.574059999999999 ZT8-11 12.168099999999999 12.168099999999999 12.168099999999999 ZT12-15 0 0 0 ZT16-19 14.46785 14.46785 14.46785 ZT20-23 11.45065 11.45065 11.45065