{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Arkusz1","Arkusz2","Arkusz3"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Arkusz1","index":0,"n_rows":26,"n_cols":5,"rows_kept":26,"flags":["formulas_cached_only"]}
[]
[null,"Colour","is","should be"]
[null,"Green",0]
[null,"Green",0]
[null,"Green",0]
[null,"Green",0]
[null,"Red",0]
[null,"Red",0]
[null,"Red",0]
[null,"Green",30,null,"<- ok. - change from \"red\" to \"green\" should be 30"]
[null,"Green",0]
[null,"Green",0]
[null,"Red",0]
[null,"Red",0]
[null,"Red",0]
[null,null,0]
[null,"Green",0,30,"<- change from \"red\" to \"green\" should be 30 but there is empty cell between"]
[null,"Green",0]
[null,"Green",0]
[null,"Green",0]
[null,"Red",0]
[null,null,0]
[null,"Green",0,30,"<- change from \"red\" to \"green\" should be 30 but there is empty cell between"]
[null,"Red",0]
[null,null,0]
[null,null,0]

{"sheet":"Arkusz2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Arkusz3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}