new commit with included PDFs (again)

Probably I forgot adding the files to the commit (the files were already in the right position).

assigned to @valerio.formato

added 1 commit

• c055d91e - same as before with corrected link to superdarn_datacube description PDF

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added 1 commit

• ff8a2759 - again...

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mentioned in commit a6f5b196

merged