condition mean min max ZT0-3 236.89999999999998 236.89999999999998 236.89999999999998 ZT4-7 289.1 289.1 289.1 ZT8-11 285.95000000000005 285.95000000000005 285.95000000000005 ZT12-15 258.7 258.7 258.7 ZT16-19 236.64999999999998 236.64999999999998 236.64999999999998 ZT20-23 287.0 287.0 287.0