condition mean min max ZT0-3 0.01496825 0.0 0.04490475 ZT4-7 0.0 0.0 0.0 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 0.04919905 0.04919905 0.04919905