Maunder minimum means what?

The mechanisms behind the lack of sunspots in the late 16 hundreds to the early 17 hundreds (the Maunder Minimum) is debated. Among the effects on the Earth was colder weather for extended periods...

They are the smallest and largest values a function can take on in it's domain. So if f(x) is a function, and the max value occurs at a point A, then f(A) is the max and similarly with the min.

how low the internal (inside the object) temperature can get

not as strict as medium or maximum

PASTY