{"text_format":"1","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"not_rendered":{"charts":1,"images":0,"macros":0,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":12,"n_cols":2,"rows_kept":12,"cut":false,"hidden":false,"merged":[]}
["年月","売上"]
["2020-04-01",1269385]
["2020-05-01",1945494]
["2020-06-01",1974339]
["2020-07-01",2559254]
["2020-08-01",1168202]
["2020-09-01",1001908]
["2020-10-01",2923305]
["2020-11-01",2528463]
["2020-12-01",2396418]
["2021-01-01",1142110]
["2021-02-01",2246425]