condition mean min max ZT0-3 723.3 723.3 723.3 ZT4-7 844.6 844.6 844.6 ZT8-11 797.8 797.8 797.8 ZT12-15 874.15 874.15 874.15 ZT16-19 802.4 802.4 802.4 ZT20-23 760.8 760.8 760.8