График частотности: скоробогатова

[{"date": "2011-11-18", "qty": 3}, {"date": "2011-11-19", "qty": 11}, {"date": "2011-11-20", "qty": 3}, {"date": "2011-11-21", "qty": 3}, {"date": "2011-11-28", "qty": 8}, {"date": "2017-05-22", "qty": 3}]