{"text_format":"3","workbook":"xls","n_sheets":2,"sheets":["family1","family2"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"family1","index":0,"n_rows":6,"n_cols":4,"rows_kept":6,"flags":["formulas_cached_only"]}
["name","number","age","time"]
["张三",13,27,"2017-03-31T15:13:00"]
["李四",32,24,"2017-03-31T15:13:00"]
["孙大圣",121,22,"2017-03-31T15:13:00"]
["唐僧",44,18133339999,"2017-03-31T15:13:00"]
["猪八戒",54,18.001342,"2017-03-31T15:13:00"]

{"sheet":"family2","index":1,"n_rows":6,"n_cols":4,"rows_kept":6,"flags":["formulas_cached_only"]}
["name","number","age","time"]
["张三2",13,27,42825.6340277778]
["李四2",32,24,42825.63402777778]
["孙大圣2",121,22,42825.63402777778]
["唐僧2",44,28,42825.63402777778]
["猪八戒2",54,18,42825.6340277778]