condition mean min max ZT0-3 346.54004284999996 147.8073494 545.2727362999999 ZT4-7 641.07603375 522.7697827 759.3822848 ZT8-11 206.5476989635 107.237730977 305.85766695 ZT12-15 12.095776610249999 9.816999814999999 14.3745534055 ZT16-19 48.75733558500001 35.32240887 62.19226230000001 ZT20-23 50.502391557500005 37.30635161 63.698431505