{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":55,"n_cols":4,"rows_kept":55}
[]
["a","b"]
["c","d",null,"e"]
[{"$nulls":3},"- f"]
[]
["a"]
["b","c"]
["d","e"]
[]
[null,"a"]
[null,"b"]
["c","d"]
["e","f"]
[]
["a","b"]
["c","d"]
[null,"2. e"]
[]
["a","b"]
["c","d"]
["e"]
["f"]
[]
["a"]
["b","c"]
["d","e"]
[null,"f"]
[]
["a"]
["b"]
["c","d"]
["e","f"]
["g"]
[]
[null,"a"]
["b","c"]
["d","e"]
[null,"f"]
[null,"g"]
[]
["a"]
["b"]
["c","d"]
["e","f"]
["g"]
["h"]
[]
["a","b","c"]
[]
["a"]
["b","c","d"]
[]
["a","b","c"]
["d"]
["e"]