suggestion for tutorial: "facebook analytics"

Hi, after getting the data and making figures I noticed that on top of the shares per hour graph there is "blanks". 

I figured out by applying filters "is not blank"  how to get rid of that part of the bar.

It may be good to cover that aspect of Power BI as well in the tutorial?

The rest of it was clear (my print showed yellow power BI bars on each single page... from page 4 onwards but there was sufficient information / figures to figure out what to do.

thanks! <3 the tool

Henrike