{"text_format":"5","workbook":"xls","n_sheets":2,"sheets":["Sheet1","Chart1"],"props":{"creator":"John McNamara","last_modified_by":"John McNamara"},"not_rendered":{"charts":1,"external_links":1},"unopened":[{"sheet":"Chart1","index":1,"reason":"not_a_worksheet"}],"read":"whole","wrapped":"gz","date_system":"1900","formulas":"cached_only"}

{"sheet":"Sheet1","index":0,"n_rows":10,"n_cols":2,"rows_kept":10,"flags":["formulas_cached_only"]}
[1,1]
[2,2]
[3,3]
[4,4]
[5,5]
[6,6]
[7,7]
[8,8]
[9,9]
[10,10]