condition mean min max ZT0-3 108.52742 108.52742 108.52742 ZT4-7 203.701305 203.701305 203.701305 ZT8-11 206.9998565 206.9998565 206.9998565 ZT12-15 176.7415355 176.7415355 176.7415355 ZT16-19 142.72382499999998 142.72382499999998 142.72382499999998 ZT20-23 163.242671 163.242671 163.242671