Suggest you post a small amount of sample data, for people to play with. I agree with the suggestion to look into SGPLOT (or even GTL), for the box plot, and see the axistable statement for generating a table of summary statistics below the plot. SGPLOT is very friendly, lots of examples at Sanjay Matange's blog, e.g.:
https://blogs.sas.com/content/graphicallyspeaking/2015/12/23/box-plot-with-stat-table-and-markers/
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