Chart for Event Occurrences in WebI

I have a requirement to show a graph of occurrences for Events that occur throughout the day.  So possibly along the X-axis as the date / time of day and then the Y-axis showing that the Event occurred.  (Even a plot or bubble chart showing when each Event occurred).

The business wants to identify if these Events are occurring at random intervals throughout the time of day or in close groups during specific times.

Here's my core sample data set:

My dilemma is that all of the WebI Charts are looking for measures, but this is a date/time dimension which is stored on the record when the Event occurs.  I've tried converting the time to a Measure in the Universe, but Webi still ignores it and will not let me use it as a value in the Charts.  (I converted my Event Time to a Measure of Data Type 'DateTime' w/ Projection Function 'None'.)

I'm using WebI Version 4.1 SP6 Patch 2

Any suggestions would be much appreciated!

Thank You & Regards, A. Cook