Thanks for the reply!
Your suggestion correctly displays every fifth label, but the values of those labels are based on the given data.
For example:
x-axis data: 0, 1.3, 2.4, 2.9, 3.8, 4.6, 5.3, ....
x-labels: 0, 3.8, ... (where 3.8 is the fifth value)
desired x-labels: 0, 5, 10, ....
Is it possible to display x-axis values where data points may not exist?
Again, thanks for the help!