I'm currently making a figure with three curves in the same graph (multi-curves figure).
In this type of graph, it's apparently impossible to insert standard deviation (because of space limitations i think)
Not that I can provide an answer to your concrete question but as a general remark: You can do amazing things with SAS/Graph when coding but it's also kind of a world on its own and not too easy to get into it.
The SAS/Graph Guru is Robert Allison and if it's worth for you to make the effort then you might find an example on his site close to what you need as starting point: http://www.robslink.com/SAS/Home.htm
HTH
Patrick
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