condition mean min max ZT0-3 10.643346357 6.722529934 14.564162780000002 ZT4-7 14.818845795000001 14.780696145 14.856995445 ZT8-11 27.109517829999998 19.968547129999997 34.25048853 ZT12-15 51.45977621 50.558834765 52.360717655 ZT16-19 46.080105689999996 41.81848862 50.341722759999996 ZT20-23 40.17778083 39.28853391 41.06702775