condition mean min max ZT0-3 0.09854766666666666 0.0 0.15805 ZT4-7 0.3821525 0.3821525 0.3821525 ZT8-11 0.298869 0.298869 0.298869 ZT12-15 0.09459625 0.0 0.1891925 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0