{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Hoja1","Hoja2","Hoja3"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Hoja1","index":0,"n_rows":6,"n_cols":4,"rows_kept":6,"flags":["formulas_cached_only"]}
[]
[]
[]
[]
[]
[{"$nulls":3},"HOLAAAAAAAAA"]

{"sheet":"Hoja2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Hoja3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}