condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.03988645 0.03988645 0.03988645 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.05123 0.05123 0.05123 ZT20-23 0.0132797 0.0132797 0.0132797