condition mean min max ZT0-3 45.849563 45.849563 45.849563 ZT4-7 30.691237 30.691237 30.691237 ZT8-11 36.934428 36.934428 36.934428 ZT12-15 40.0637175 40.0637175 40.0637175 ZT16-19 45.9727075 45.9727075 45.9727075 ZT20-23 44.5576745 44.5576745 44.5576745