condition mean min max ZT0-3 356.5 356.5 356.5 ZT4-7 439.2 439.2 439.2 ZT8-11 376.8 376.8 376.8 ZT12-15 375.4 375.4 375.4 ZT16-19 323.95000000000005 323.95000000000005 323.95000000000005 ZT20-23 381.54999999999995 381.54999999999995 381.54999999999995