condition mean min max ZT0-3 0.0436953135 0.0 0.087390627 ZT4-7 0.305968968 0.2246928565 0.38724507950000003 ZT8-11 0.15792089850000002 0.11166319150000001 0.2041786055 ZT12-15 0.6299060802500001 0.4071688355 0.8526433250000001 ZT16-19 1.1878672915 1.112822709 1.2629118739999998 ZT20-23 3.644012636 1.8558929659999999 5.432132306