condition mean min max ZT0-3 0.019537483333333334 0.0 0.044216200000000004 ZT4-7 0.041740849999999996 0.041740849999999996 0.041740849999999996 ZT8-11 0.0144274 0.0144274 0.0144274 ZT12-15 0.0144372 0.0 0.0288744 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0304216 0.0304216 0.0304216