{"text_format":"3","workbook":"xls","n_sheets":2,"sheets":["insert_1","insert_2"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"insert_1","index":0,"n_rows":5,"n_cols":5,"rows_kept":5,"flags":["formulas_cached_only"]}
["int","decimal","bool","varchar","datetime"]
[2,2,true,"Line 1","2019-06-15"]
[4,2.1,false,"Line 2","2015-06-15"]
[6,2.12,1,"Line 3","2010-09-05"]
[8,2.123,false,"Line 4","2010-09-07"]

{"sheet":"insert_2","index":1,"n_rows":5,"n_cols":5,"rows_kept":5,"flags":["formulas_cached_only"]}
["int","decimal","bool","varchar","datetime"]
[2,2,true,"Line 1","2019-06-15"]
[4,2.1,false,"Line 2","2015-06-15"]
[6,2.12,1,"Line 3","2010-09-05"]
[8,2.123,false,"Line 4","2010-09-07"]