condition mean min max ZT0-3 54.222322 54.222322 54.222322 ZT4-7 89.3429895 89.3429895 89.3429895 ZT8-11 67.828971 67.828971 67.828971 ZT12-15 76.0831695 76.0831695 76.0831695 ZT16-19 68.631998 68.631998 68.631998 ZT20-23 159.1807185 159.1807185 159.1807185