All you need to do is look in the freezer section, just next to the carrots and broccolli ... if you can't find peas...you could always settle for tinned. They're just over on the other aisle, by the beans.

Oh...hang on....you didn't actually want to know anything about hte peas...you wanted to know all about the values in export_descr_unit... which comes complete with a set of instructions at the top which tell you what the values do... and they don't make ANY mention of frozen veg. Maybe they will add that in a patch!