condition mean min max ZT0-3 1.7170051499999999 0.0 5.12747 ZT4-7 2.21007 2.21007 2.21007 ZT8-11 0.5834195 0.5834195 0.5834195 ZT12-15 0.6358515 0.425024 0.846679 ZT16-19 0.0 0.0 0.0 ZT20-23 0.02487765 0.02487765 0.02487765