condition mean min max ZT0-3 10.700647 10.700647 10.700647 ZT4-7 10.560528 10.560528 10.560528 ZT8-11 10.256519999999998 10.256519999999998 10.256519999999998 ZT12-15 10.301580999999999 10.301580999999999 10.301580999999999 ZT16-19 10.0862265 10.0862265 10.0862265 ZT20-23 10.4429805 10.4429805 10.4429805