condition mean min max ZT0-3 2.2957162429999998 1.8713167069999999 2.720115779 ZT4-7 0.0438315095 0.042079782999999996 0.045583236 ZT8-11 0.358882416 0.0803778025 0.6373870294999999 ZT12-15 27.642384295 15.374759125 39.910009465 ZT16-19 69.5908799775 55.657213455 83.5245465 ZT20-23 133.258505875 113.45086995 153.0661418