condition mean min max ZT0-3 78.4237099425 58.594270304999995 98.25314958 ZT4-7 43.73092169 40.15981836 47.30202502 ZT8-11 45.202204075 40.129022135 50.275386014999995 ZT12-15 52.123238064999995 51.831440979999996 52.415035149999994 ZT16-19 52.0259782175 51.27817106 52.773785375 ZT20-23 48.41424537 47.851037855 48.977452885