condition mean min max ZT0-3 0.00243674 0.00243674 0.00243674 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0084686 0.0084686 0.0084686 ZT12-15 0.0119125 0.0119125 0.0119125 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0