condition mean min max ZT0-3 0.00640315 0.00640315 0.00640315 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0193401 0.0193401 0.0193401 ZT12-15 0.02051515 0.02051515 0.02051515 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0115874 0.0115874 0.0115874