condition mean min max ZT0-3 439.85 439.85 439.85 ZT4-7 411.1 411.1 411.1 ZT8-11 425.15 425.15 425.15 ZT12-15 397.04999999999995 397.04999999999995 397.04999999999995 ZT16-19 390.4 390.4 390.4 ZT20-23 334.9 334.9 334.9