[header] How to read an audiogram [title] Find the frequency plotted along the bottom of the graph. [step] The horizontal axis of the graph will show you the frequencies that were used in your test, measured in hertz. Each line in the graph will correspond to its own frequency, which will allow you to see how well you heard that frequency. 
They start low and move higher on the spectrum. [substeps] Frequencies commonly range from 250 hz up to 8000 hz.