Thread: graphing two sets of data on same graph

This should be easy to do but I can't figure it out.

I have two sets of data I'm trying to put in a line graph. They both have the same x-axis which is "date". And both sets of data even have the same values for date.

The y-axis is temperature and this is the only point in which they differ. However, when I graph in a series, only one set of data has the proper y-axis values. The other one is on the graph but it is not plotted at the right temperature points. How do I get both graphs to graph with the right y-axis values?

I have attached the chart.