The bar chart viewlet is useful as it allows you to easily see the differences of various item counts, grouped by location, severity or other keyword. Select the following option on the Chart type menu to display a bar chart.
Viewing a bar chart
Bar charts generate data in a viewlet with horizontal bars. Hovering over the bars will display a status pop-up and clicking on the bars will open a Console viewlet to view additional details. Number, count or other counting expressions must be included in the query or form.
See Viewlet display options to learn how to hide bars and other viewlet customization options.
jKQL> Get number of events group by severity show as barchart