I don't know.

For me feeling comfortable is what matters. And I can handle quite a wide specter of moods. I can be depressed but be more or less okay with it... sure I try to fight it at the same time... but I don't panic over moods, unless they are very very extreme.

"Normal" is to feel sad over sad things and happy over good things. To feel mad at injustice and stupidity, excited over good things happening. There is however, imho, no such thing as universal "normal" mood. Specter of moods corresponding to situation is normal.