Reading stresses from CDB

How stresses at the upper side of QUAD elements can be read from CDB? The Result Viewer direct me to “quad_for” record.
But there is no item “__s2dof” there. Any ideas are welcome.

What “__” mean in the Result Viewer in data denotations? My guess is that these data does not come from CDB directly but calculated.

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look at 22? tables

You’re correct, the elastic stresses are calculated by wingraf/resultviewer.
Non-linear stresses are stored in the 22? category.

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It sounds logical for me, it is better to make simple calculations on demand than to bloat the data base.