Serial Plotter

How do I know which input on the serial plotter pertains to which input. Each of the inputs are a different color but I cannot tell which one is the input value that I need.

I have attached a file that shows my serial plotter. There are 7 inputs that are different frequency bands, two of the bands have very similar values so I cannot tell which is the one I am looking for based on the Serial Monitor. I just need to know the order arduino uses the colors for the serial plotter.

There is a series of colored squares at the top right corner of the Serial Plotter that shows the order.

Is that right to left I'm assuming?