condition mean min max ZT0-3 0.17659550000000002 0.0 0.35319100000000003 ZT4-7 0.7227575 0.7227575 0.7227575 ZT8-11 0.7228355 0.7228355 0.7228355 ZT12-15 0 0 0 ZT16-19 0.527448 0.527448 0.527448 ZT20-23 0.17756 0.17756 0.17756