condition mean min max ZT0-3 0.061455589000000005 0.0 0.12291117800000001 ZT4-7 0.2522378775 0.125132673 0.379343082 ZT8-11 0.2663396595 0.1949976455 0.3376816735 ZT12-15 0.34010468625 0.322623588 0.3575857845 ZT16-19 0.4819164450000001 0.44348201000000004 0.5203508800000001 ZT20-23 0.75100598225 0.735449521 0.7665624435