Click 
icon on the right to view the dashboard view of Sonar Code Quality. The dashboard has sections representing different code quality metrics.
The metrics displayed on the dashboard are based on the project selected from 'Project' drop down appearing in the top bar.
The top bar displays the project, last analyzed date, version and status of Quality Gate associated to the project.
Reliability - displays the total bugs, new bugs introduced in the new or updated code and reliability rating
Maintainability - Displays code smells, new code smells and maintainability rating (formerly known as SQALE Rating) of the project
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The metrics we capture for the sprint or the last 30 days are
Reliability
Maintainability
Security
Code Quality Issues
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Test Coverage
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Size
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and
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Documentation
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