line graph problem in excel!!!

For a class project I have to make several line graphs with temperatures and months listed.

I have attached what it should look like. And what my attempt in excel looks like.

The first one is temperature where it has Morning temp, Average Temp, Afternoon Temp, and the comfortable barrier.

I guess what im asking is what did I do wrong, and what are the step by steps of doing this right?

Because basically for each month I have several fields of date i need to add.

If i could put points somehow and it create a line, that would work. Or if anyone knows a better program to do it in.

Thanks!

Matt