condition mean min max ZT0-3 49.774550000000005 49.774550000000005 49.774550000000005 ZT4-7 22.0719 22.0719 22.0719 ZT8-11 17.65615 17.65615 17.65615 ZT12-15 19.515749999999997 19.515749999999997 19.515749999999997 ZT16-19 35.6953 35.6953 35.6953 ZT20-23 38.28815 38.28815 38.28815