Suppose I have an event, say the "loading" category, that indicates when the users on my site are experiencing long load times.
I want to study the fraction of sessions in which the event occurs: for example, to determine which times of the week are most prone to the event, or whether there are significant jumps after new server deployments.
I can currently plot the number of sessions with the event, but this data is skewed because my traffic highly depends on the time of day and week.
There are many options for event analysis in Google Analytics. Is there one that returns the fraction of total sessions in which a given event occurs?