See Methodology/Disclaimer and scroll down to the "Reliability Statistics - A Note for Expert Witnesses" section.
To View Reliability Statistics for an Area
1.Go to the Graphs tab.
2.Select a Destination Location that is in the United States, Canada, or the UK.
3.Click the 
button below the graph to view Reliability Statistics for the selected location.
Please note: Reliability statistics are only available when salary points are displayed for the Destination area. The button is hidden when salary points are not shown (e.g., for bar charts, the COL line graph, or locations outside of North American and the UK). For more information, read about Graphs.