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["Data","Sprzedaż",null,null,null,null,null,"Data","Sprzedaż"]
["2020-10-01",45,52,null,null,null,null,"2020-10-01",45]
["2020-10-02",36,null,null,null,null,null,"2020-10-01",52]
["2020-10-04",15,77,100,17,null,null,"2020-10-02",36]
["2020-10-05",62,null,null,null,null,null,"2020-10-04",15]
["2020-10-07",65,68,null,null,null,null,"2020-10-04",77]
["2020-10-08",82,null,null,null,null,null,"2020-10-04",100]
["2020-10-09",89,23,63,null,null,null,"2020-10-04",17]
["2020-10-10",91,5,null,null,null,null,"2020-10-05",62]
["2020-10-14",57,null,null,null,null,null,"2020-10-07",65]
["2020-10-15",82,19,54,null,null,null,"2020-10-07",68]
[null,null,null,null,null,null,null,"2020-10-08",82]
[null,null,null,null,null,null,null,"2020-10-09",89]
[null,null,null,null,null,null,null,"2020-10-09",23]
[null,null,null,null,null,null,null,"2020-10-09",63]
[null,null,null,null,null,null,null,"2020-10-10",91]
[null,null,null,null,null,null,null,"2020-10-10",5]
[null,null,null,null,null,null,null,"2020-10-14",57]
[null,null,null,null,null,null,null,"2020-10-15",82]
[null,null,null,null,null,null,null,"2020-10-15",19]
[null,null,null,null,null,null,null,"2020-10-15",54]
[]
[]
[]
[]
["https://stackoverflow.com/questions/36043415/why-does-transposing-array-with-dates-in-format-dd-mm-yy-change-some-dates-to-mm"]