I'm writing a technical report and need to add a line chart to show how many people start going home during each hour (e.g. between 14:00 and 15:00). The numbers of people are counted (estimated) by some technical method. The line chart looks like the following.
My question is whether a caption below is correct or not.
Figure1. Estimated number of people who start going home during an hour
Figure1. Estimated number of people starting to go home during an hour
I'm sorry for not mentioning very detail context. If you suggest a lack of information, I'll add it. Thank you.