condition mean min max ZT0-3 0.026807700000000004 0.026807700000000004 0.026807700000000004 ZT4-7 0.0151369 0.0151369 0.0151369 ZT8-11 0.06433295 0.06433295 0.06433295 ZT12-15 0.07477439999999999 0.07477439999999999 0.07477439999999999 ZT16-19 0.10107139999999999 0.10107139999999999 0.10107139999999999 ZT20-23 0.04146475 0.04146475 0.04146475