{"text_format":"3","workbook":"xlsx","n_sheets":2,"sheets":["Main","Secondary"],"not_rendered":{"pivot_tables":1},"read":"whole","date_system":"1900"}

{"sheet":"Main","index":0,"n_rows":6,"n_cols":3,"rows_kept":6}
["Person","Age","Location"]
["Anton Antich",23,"Switzerland"]
["James Bond",35,"Moscow"]
[]
[]
["Just a random cell"]

{"sheet":"Secondary","index":1,"n_rows":6,"n_cols":5,"rows_kept":6}
["Sum of Age","Column Labels"]
["Row Labels","Moscow","Switzerland","(blank)","Grand Total"]
["Anton Antich",null,23,null,23]
["James Bond",35,null,null,35]
["(blank)"]
["Grand Total",35,23,null,58]