condition mean min max ZT0-3 25.609074999999997 23.432299999999998 27.78585 ZT4-7 27.989649999999997 27.989649999999997 27.989649999999997 ZT8-11 26.96185 26.96185 26.96185 ZT12-15 0 0 0 ZT16-19 37.4422 37.4422 37.4422 ZT20-23 33.136399999999995 33.136399999999995 33.136399999999995