Creating plot chart

[cpigrome]

Imgur

I want to plot a line chart for the max spread over time, can anyone assist me in doing this as i'm getting confused when going to select data etc. I want it so that the time is x axis and the y is the amount of spread over time. Also so when the data updates, the chart changes with it. So for example, at the moment its from the 6-8th of july at given times. When someone changes the date to a longer or shorter period it changes the chart as well.

Thanks for any replies!

 

[pbornemeier]

This site discusses dynamic charts:
Create a Dynamic Chart