condition mean min max ZT0-3 0.02377395 0.0 0.03650755 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0699121 0.0699121 0.0699121 ZT12-15 0.01935525 0.0 0.0387105 ZT16-19 0.0325942 0.0325942 0.0325942 ZT20-23 0.0 0.0 0.0