condition mean min max ZT0-3 0.18635010725 0.1632566015 0.209443613 ZT4-7 0.22850247375 0.22606729999999997 0.2309376475 ZT8-11 0.330706269 0.3205922745 0.3408202635 ZT12-15 0.32525905175000003 0.267643771 0.3828743325 ZT16-19 0.34279655725 0.3145528005 0.37104031400000004 ZT20-23 0.54060359675 0.410240543 0.6709666505