condition mean min max ZT0-3 374.3 374.3 374.3 ZT4-7 1090.6 1090.6 1090.6 ZT8-11 1099.25 1099.25 1099.25 ZT12-15 1180.7 1180.7 1180.7 ZT16-19 585.85 585.85 585.85 ZT20-23 505.4 505.4 505.4