Sunset and sunris in an graph

[vvestoel]

Hi
Two questions:
I have a graph that shows the monthly activity on a bait site for brown bears. I want to insert the sunrise / sunset in a month?
Is it pedagogic to set the average time of sunrise / sunset in this graph, or is there another way to do it?

 

[Steve=True]

[h=2]Hello VVestoel,

Here is a similar technique.

How-to Show Decades and Highlight a Year in the Horizontal Axis[/h]http://www.exceldashboardtemplates.com/how-to-show-every-10-years-and-highlight-a-year-in-the-axis/

Please let me know if it helps.

Steve=True