condition mean min max ZT0-3 0.12924312500000001 0.07466775 0.1838185 ZT4-7 0.076013 0.076013 0.076013 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0367787 0.0367787 0.0367787 ZT20-23 0.11082845 0.11082845 0.11082845