condition mean min max ZT0-3 0.0078577 0.0078577 0.0078577 ZT4-7 0.08689615 0.08689615 0.08689615 ZT8-11 0.2132855 0.2132855 0.2132855 ZT12-15 0.01082145 0.01082145 0.01082145 ZT16-19 0.04797595 0.04797595 0.04797595 ZT20-23 0.0187926 0.0187926 0.0187926