{"text_format":"3","workbook":"xls","n_sheets":1,"sheets":["Sheet1"],"not_rendered":{"external_links":1},"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Sheet1","index":0,"n_rows":3,"n_cols":3,"rows_kept":3,"flags":["formulas_cached_only"]}
["number","string","boolean"]
[1,"two",true]
[3,"four",false]