condition mean min max ZT0-3 1819.0 1819.0 1819.0 ZT4-7 2303.4 2303.4 2303.4 ZT8-11 2282.45 2282.45 2282.45 ZT12-15 2010.1 2010.1 2010.1 ZT16-19 1714.9 1714.9 1714.9 ZT20-23 1805.8000000000002 1805.8000000000002 1805.8000000000002