of Successful Authentication, :* The chart shows how many users have successfully logged in. Using the t_user_auth_log table, the dataset is grouped according to user_eid when "event"= 0 for successful authentications.
of Successful Authentication by Device: The chart is obtained by grouping the same chart according to *"nas_hostname".
of Authentication Failures: The chart shows how many users logged in when they signed up. In the query, when the difference between 2 and *"event" is equal to 1, not 0, meaning that 0's are successful and 1's are unsuccessful.