condition mean min max ZT0-3 1801.15 1801.15 1801.15 ZT4-7 1801.5 1801.5 1801.5 ZT8-11 2204.0 2204.0 2204.0 ZT12-15 2169.15 2169.15 2169.15 ZT16-19 2006.5 2006.5 2006.5 ZT20-23 2272.2 2272.2 2272.2