condition mean min max ZT0-3 46.52453333333334 46.52453333333334 46.52453333333334 ZT4-7 39.4821 39.4821 39.4821 ZT8-11 32.9863 32.9863 32.9863 ZT12-15 33.58895 33.58895 33.58895 ZT16-19 37.2045 37.2045 37.2045 ZT20-23 40.839999999999996 40.839999999999996 40.839999999999996