condition mean min max ZT0-3 0.7304117499999999 0.6201414999999999 0.8406819999999999 ZT4-7 0.465823 0.465823 0.465823 ZT8-11 0.8517170000000001 0.8517170000000001 0.8517170000000001 ZT12-15 0 0 0 ZT16-19 0.99004 0.99004 0.99004 ZT20-23 1.37813 1.37813 1.37813