What is the age of the middle-aged and elderly people in the eight characters?

From the four pillars of eight characters, the column tube is 1 to 16 years old, the moon column tube 17 to 32 years old, and the column tube is old in middle age.

There is also a saying that the moon column tube 1 is 25 years old, and the column tube is 25 to 50 years old. After 50 years old, it is young, middle-aged and old.