condition mean min max ZT0-3 0.016172047000000002 0.0 0.032344094000000004 ZT4-7 0.05668534075 0.0 0.1133706815 ZT8-11 0.08112704875 0.053784729 0.1084693685 ZT12-15 0.21986165424999998 0.1890779815 0.250645327 ZT16-19 0.288068008 0.2850697075 0.29106630850000004 ZT20-23 0.47983330899999993 0.26292692949999996 0.6967396884999999