$VAR1 = {
          '2017-09-04' => {
                            'b' => 27.27,
                            'd' => 9.09,
                            'c' => 18.18,
                            'a' => 45.45
                          },
          '2017-09-30' => {
                            'b' => 28.57,
                            'c' => 14.29,
                            'a' => 57.14
                          }
        };