condition mean min max ZT0-3 334.6 334.6 334.6 ZT4-7 337.2 337.2 337.2 ZT8-11 374.25 374.25 374.25 ZT12-15 377.75 377.75 377.75 ZT16-19 442.5 442.5 442.5 ZT20-23 389.79999999999995 389.79999999999995 389.79999999999995