condition mean min max ZT0-3 0.3769205 0.3769205 0.3769205 ZT4-7 0.354529 0.354529 0.354529 ZT8-11 0.366341 0.366341 0.366341 ZT12-15 0.16373549999999998 0.16373549999999998 0.16373549999999998 ZT16-19 0.371761 0.371761 0.371761 ZT20-23 0.15359299999999998 0.15359299999999998 0.15359299999999998