condition mean min max ZT0-3 376.5 376.5 376.5 ZT4-7 289.4 289.4 289.4 ZT8-11 287.2 287.2 287.2 ZT12-15 285.1 285.1 285.1 ZT16-19 321.3 321.3 321.3 ZT20-23 383.2 383.2 383.2