condition mean min max ZT0-3 21.7947430025 16.47379192 27.115694085 ZT4-7 29.737855324999998 26.71646683 32.759243819999995 ZT8-11 47.4485351725 42.466458695 52.43061165 ZT12-15 32.7365034475 24.63961809 40.833388805 ZT16-19 28.708882705 28.5761696 28.84159581 ZT20-23 24.80992178 24.28801162 25.33183194