{"text_format":"1","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"not_rendered":{"charts":1,"images":0,"macros":1,"external_links":0,"defined_names":1,"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":5,"n_cols":11,"rows_kept":5,"cut":false,"hidden":false,"merged":[]}
[null,"father","mother","child","infant","brother1","brother2","brother3","brother4","brother5","brother6"]
["Type a2",42.2,39.1,47.9,36.1,null,22.9,56.3,null,57.3,36.1]
["Type b2",53,47,43.3,35,null,30.8,51.7,null,55.8,35]
["Type c2",59.4,65.599999999999994,59.5,30.5,null,32.299999999999997,55,null,59,30.5]
["Type d2",43.1,61.9,54.7,33.5,null,34.1,40,null,57.1,33.5]