condition mean min max ZT0-3 0.03252265825 0.0 0.0650453165 ZT4-7 0.03264661183333333 0.0 0.06529322366666666 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0