  Certain local thermal observables are considered in well-known examples of
spatially open FRW spaces: Milne, open de Sitter and anti de Sitter as well as
Einstein static universes. Another value for fixing the ambiguity in defining
the Wick square and, hence, the local temperature is motivated in the last
example. Physical consequences of that choice are discussed for static and
conformal vacua in those spaces.
