condition mean min max ZT0-3 1847.9 1847.9 1847.9 ZT4-7 2108.6 2108.6 2108.6 ZT8-11 2928.9 2928.9 2928.9 ZT12-15 3695.65 3695.65 3695.65 ZT16-19 3181.45 3181.45 3181.45 ZT20-23 1928.15 1928.15 1928.15