My chart has 4 lines. I want to add high-low lines that take into consideration only the values of 2 of the 4 lines.


For example, if I have four lines. The date is the x-axis.

Line 1 = all values are 5
Line 2 = all values are 10
Line 3 = all values are 15
Line 4 = all values are 20.

I would like the high-low lines to look at only line 2 and 4, so the low values will always be 10, ignoring the 5, and the high values will be 20.