How is the overall doctoral grade determined?

The dissertation grade is calculated as the average of all grades awarded by the reviewers. The doctoral examination is awarded one grade determined by all examiners together. A grade of at least 4.0 is required to pass. 
When calculating the overall Latin grade, the dissertation grade counts for twice as much as the doctoral examination grade. The following Latin grades are awarded to successful doctorates: 

5.75–6.00 excellent (summa cum laude)
5.25–5.74 very good (insigni cum laude)
4.75–5.24 good (magna cum laude)
4.25–4.74 satisfactory (cum laude)
4.00–4.24 pass (rite)