Standard Deviation of the Unemployment Rates in All 50 States

Corrections was idly looking at the unemployment rate in all 50 states over time (click to enlarge):

Other than the "Hurricane Katrina" effect for Mississippi and Louisiana and the Great Recession, the most interesting thing to come out of this graph is the increase in dispersion between the states.  Below, find each month's standard error between states (click to enlarge).  Pretty remarkable.