condition mean min max ZT0-3 1562.05 1562.05 1562.05 ZT4-7 2274.0 2274.0 2274.0 ZT8-11 2583.55 2583.55 2583.55 ZT12-15 2527.75 2527.75 2527.75 ZT16-19 1912.35 1912.35 1912.35 ZT20-23 1573.1999999999998 1573.1999999999998 1573.1999999999998