condition mean min max ZT0-3 86.89675 86.89675 86.89675 ZT4-7 82.44319999999999 82.44319999999999 82.44319999999999 ZT8-11 106.5565 106.5565 106.5565 ZT12-15 107.2915 107.2915 107.2915 ZT16-19 86.99334999999999 86.99334999999999 86.99334999999999 ZT20-23 102.2128 102.2128 102.2128