condition mean min max ZT0-3 459.4 459.4 459.4 ZT4-7 447.7 447.7 447.7 ZT8-11 437.15 437.15 437.15 ZT12-15 485.5 485.5 485.5 ZT16-19 423.7 423.7 423.7 ZT20-23 310.4 310.4 310.4