As of 1 September 2021, no correlation versus VC was revealed for DCC values and DDC figures showed a decreasing trend [ 32 ], while as of 1 February 2022, DCC showed an increasing trend versus VC and BC (one-per cent increment in VC and BC caused, respectively, 40.9 and 38.7 increase in DCC values; DDC values demonstrated decreasing trends versus VC and BC [ 33 ]).
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