condition mean min max ZT0-3 0.02512251275 0.0 0.0502450255 ZT4-7 0.2819412245 0.1106554605 0.4532269885 ZT8-11 1.1184894182499998 0.9901540885 1.2468247479999999 ZT12-15 1.317143378 1.3045885899999998 1.329698166 ZT16-19 1.0815288665 0.889723917 1.273333816 ZT20-23 1.31475882725 1.2979184545 1.3315991999999999