condition mean min max ZT0-3 0.0091928165 0.0 0.018385633 ZT4-7 0.0 0.0 0.0 ZT8-11 0.28248089875 0.0158781955 0.549083602 ZT12-15 3.25884458325 2.2240648305 4.293624336 ZT16-19 2.2989661805000003 2.1080861410000002 2.4898462200000004 ZT20-23 0.75935456925 0.3966502145 1.122058924