condition mean min max ZT0-3 133.89999999999998 133.89999999999998 133.89999999999998 ZT4-7 239.5 239.5 239.5 ZT8-11 187.64999999999998 187.64999999999998 187.64999999999998 ZT12-15 248.0 248.0 248.0 ZT16-19 124.6 124.6 124.6 ZT20-23 183.2 183.2 183.2