condition mean min max ZT0-3 11.8021 10.26675 12.941749999999999 ZT4-7 11.5685 11.5685 11.5685 ZT8-11 8.89888 8.89888 8.89888 ZT12-15 10.372 10.1109 10.6331 ZT16-19 10.32575 10.32575 10.32575 ZT20-23 13.2941 13.2941 13.2941