condition mean min max ZT0-3 3154.1 3154.1 3154.1 ZT4-7 2768.4 2768.4 2768.4 ZT8-11 2154.25 2154.25 2154.25 ZT12-15 2125.05 2125.05 2125.05 ZT16-19 2438.3999999999996 2438.3999999999996 2438.3999999999996 ZT20-23 2753.2 2753.2 2753.2