condition mean min max ZT0-3 284.1 284.1 284.1 ZT4-7 405.6 405.6 405.6 ZT8-11 456.3 456.3 456.3 ZT12-15 374.25 374.25 374.25 ZT16-19 311.75 311.75 311.75 ZT20-23 310.35 310.35 310.35