condition mean min max ZT0-3 0.10776753350000001 0.080618701 0.134916366 ZT4-7 0.45932951850000003 0.42897812 0.48968091700000005 ZT8-11 0.5625853555 0.396305894 0.728864817 ZT12-15 2.8222144392499997 1.6741250504999998 3.970303828 ZT16-19 2.926854522 2.6307081255 3.2230009185 ZT20-23 3.3440984815 3.2763388035 3.4118581595000004