condition mean min max ZT0-3 0.43286404075 0.0 0.8657280815 ZT4-7 1.1524629695000002 0.8199837999999999 1.4849421390000002 ZT8-11 0.912232289 0.7916399114999999 1.0328246665 ZT12-15 0.29801128450000003 0.252216063 0.343806506 ZT16-19 0.60600687825 0.4487833615 0.763230395 ZT20-23 0.8144626930000001 0.497054961 1.131870425