condition mean min max ZT0-3 1355.85 1355.85 1355.85 ZT4-7 1533.4 1533.4 1533.4 ZT8-11 1604.65 1604.65 1604.65 ZT12-15 1841.6 1841.6 1841.6 ZT16-19 1811.4 1811.4 1811.4 ZT20-23 1767.9 1767.9 1767.9