title: Seasonal Sub Series Plot in SAS
body: <p>I'm studying a seasonal monthly time series and I like to plot the Seasonal Sub Series Plot or a Box Plot by Month in SAS.
  Somthing like the ones at the bottom of the page at the following link:</p>
  
  <p><a href="http://www.itl.nist.gov/div898/handbook/pmc/section4/pmc443.htm" rel="nofollow">http://www.itl.nist.gov/div898/handbook/pmc/section4/pmc443.htm</a></p>
  
  <p>I'm not sure how exactly to get this done in SAS. I appreciate any help.
  SE</p>