condition mean min max ZT0-3 2043.4 2043.4 2043.4 ZT4-7 2064.5 2064.5 2064.5 ZT8-11 1784.9 1784.9 1784.9 ZT12-15 1806.1 1806.1 1806.1 ZT16-19 2222.5 2222.5 2222.5 ZT20-23 2346.3999999999996 2346.3999999999996 2346.3999999999996