condition mean min max ZT0-3 46.7404 46.7404 46.7404 ZT4-7 43.33535 43.33535 43.33535 ZT8-11 36.66305 36.66305 36.66305 ZT12-15 39.2387 39.2387 39.2387 ZT16-19 46.804249999999996 46.804249999999996 46.804249999999996 ZT20-23 45.60145 45.60145 45.60145