condition mean min max ZT0-3 0.02226605 0.0 0.03448865 ZT4-7 0.03282885 0.03282885 0.03282885 ZT8-11 0.0333671 0.0333671 0.0333671 ZT12-15 0.0184404 0.0 0.0368808 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0