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

{"sheet":"Sheet1","index":0,"n_rows":15,"n_cols":4,"rows_kept":15,"flags":["formulas_cached_only"]}
[650]
[0]
[603,632,645,500]
[602,632,633,500]
[-1,633,634,0]
[603,645,646,300]
[601,650,632,2000]
[607,684,652,800]
[601,632,671,2000]
[604,671,684,300]
[601,671,680,1000]
[-2,671,692,0]
[605,684,611,300]
[606,692,675,500]
[0]