dotCover stores coverage analysis data in coverage snapshots.
A coverage snapshot is a data unit containing code coverage statistics for all assemblies
that were involved in the coverage run
and that had source code or PDB files available during the test run.
For coverage of unit tests and coverage of tests on server side, assemblies that contain unit tests are also included in the coverage snapshot.
Each item within the snapshot has its own percentage of statement coverage calculated as a ratio of the number of covered statements to the total number of statements. The coverage is rounded to the nearest whole percent.