condition mean min max ZT0-3 75.2589 75.2589 75.2589 ZT4-7 56.539649999999995 56.539649999999995 56.539649999999995 ZT8-11 49.94385 49.94385 49.94385 ZT12-15 56.2285 56.2285 56.2285 ZT16-19 76.60883333333334 76.60883333333334 76.60883333333334 ZT20-23 85.1364 85.1364 85.1364