# Friday Challenge – Step Chart for an Excel Time Series

I was recently asked for assistance with this request:

Hi Steve,

I am trying to make a hypnogram with data that we collected over the course of a day. I want the y-axis to denote wake (W), other (O), and sleep (s) with just three tick marks. The y-axis should represent the time spent in these states.

A hypnogram plots sleep patterns over time and is used to asses a person’s wake/sleep behavior at night (or during the day). It is used for diagnostic and treatment purposes for individuals with sleep disorders.

Some sample data:

 W 8:20:49AM 8:21:04 O 8:21:05AM 8:21:24 W 8:21:25AM 8:21:54 S 8:21:55AM 8:23:43 W 8:23:44AM 8:23:57 O 8:23:58AM 8:24:44 W 8:24:45AM 8:28:11 S 8:28:12AM 8:29:34 W 8:29:35AM 8:30:31 S 8:30:32AM 8:35:26

The second set of numbers is when the state ended.

Thank you,

Anna

https://www.exceldashboardtemplates.com/how-to-easily-create-a-step-chart-in-excel/

https://www.exceldashboardtemplates.com/how-to-easily-create-a-step-chart-in-excel-2/

https://www.exceldashboardtemplates.com/how-to-create-an-excel-step-chart-formula-using-the-small-function/

https://www.exceldashboardtemplates.com/understanding-how-to-make-a-step-chart-in-excel-using-index-and-match-functions/

Even though you can use the tutorials above to help with this Excel challenge, there is a trick to working with a Time Series in Excel.  So it might not be a easy as it may first appear.

Give it a shot and let me know if you were able to solve this challenge.  I was able to solve Anna’s request and she was able to automate it with the formulas you see in the tutorials above.  I might even get a mention in her publication if it is accepted 🙂 Way cool!

Steve=True