Excel Min And Max Lines

In Column B I have some measurements. These are measurements. I chart them in a line graph. I also have my max and min over in some other cells. These aren't the min and max of column, but these are what I have set the min and max at. To make this clearer, my max is 27, but the data in Column B could be anything....20, 28, 35, 15, etc.

I want to plot my data in Column B just as I am currently doing. However I also want to plot the min and max on that same line graph and show them has horizontal lines going across. That way, if one of my numbers is above the max (or below the min), you will be able to see it on the line graph.

Here's what my data looks like. The Viscosity (column b) is what I'm charting on the line graph and you can see the min and max data that I want to plot as well.

Sheet1

*
A
B
G
H
I
J

2
Batch No.
Viscosity
*
*
Min
Max

3
4028634
26.7
*
Viscosity
21
27

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