condition mean min max ZT0-3 3241.4 3241.4 3241.4 ZT4-7 2789.5 2789.5 2789.5 ZT8-11 1789.3 1789.3 1789.3 ZT12-15 940.7 940.7 940.7 ZT16-19 1204.15 1204.15 1204.15 ZT20-23 1833.85 1833.85 1833.85