{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Ark1","Ark2","Ark3"],"not_rendered":{"images":4},"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Ark1","index":0,"n_rows":16,"n_cols":11,"rows_kept":16,"flags":["formulas_cached_only"]}
[]
[null,"GIF",{"$nulls":3},"JPEG",{"$nulls":4},"PNG"]
{"$rows_empty":13}
[null,"JPEG"]

{"sheet":"Ark2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Ark3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}