What are six points on the mood/atmosphere of To Kill A Mockingbird?what mood it is in different chapters.... how it is depicted etc?

The mood is light for parts of the book and dark at
others.  Even the lighter moments have darker undercurrents though.  For example, the
times when the children are playing are mostly light.  The children are being children,
playing games and sharing superstitions.  However the games they play introduce some of
the darker elements, like Boo Radley's story.  This foreshadows that there is something
rotten under the surface in Maycomb. 

Most of the serious
events in the book are dark and there are periods of downright melancholy.  Yet the book
is also suspenseful, such as during the verdict reading and when Bob Ewell attacks the
children.  Atticus's shooting the dog falls into this
category.

At times, the book is sorrowful.  The sadness
that follows the verdict and Tom's death, the truth about Dill, the house fire, Boo
Radley's real story and the ending, where they decide to shelter Boo for
examples.