condition mean min max ZT0-3 5.67712 5.67712 5.67712 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.648951 0.648951 0.648951 ZT16-19 2.1722 2.1722 2.1722 ZT20-23 0.0 0.0 0.0