condition mean min max ZT0-3 29.519333333333332 20.88825 37.4566 ZT4-7 33.9488 33.9488 33.9488 ZT8-11 31.04975 31.04975 31.04975 ZT12-15 33.9209 27.6295 40.2123 ZT16-19 47.76755 47.76755 47.76755 ZT20-23 44.336600000000004 44.336600000000004 44.336600000000004