condition mean min max ZT0-3 4.9619 4.9619 4.9619 ZT4-7 5.7693 5.7693 5.7693 ZT8-11 0.0 0.0 0.0 ZT12-15 2.876665 2.876665 2.876665 ZT16-19 10.130099999999999 10.130099999999999 10.130099999999999 ZT20-23 0.0 0.0 0.0