Platform distribution of radio listening in the United Kingdom (UK) Q1 2011-Q3 2019

* The source adds the following information: "As of Q1 2016, a platform attribution model has been applied to the data which eliminates any "unspecfied" listening.
** For data before Q1 2016, the source includes this commentary regarding unspecified listening: "Inevitably, there is a certain amount of unspecified listening because either the respondent is unsure, or it is not always possible for them to know whether the station to which they are listening is being broadcast on analogue or digital, or via which platform. Every effort is made by RAJAR to ensure the instructions given to both interviewers and respondents elicit the highest possible volume of specified analogue/digital stations and platforms".
*** Time spans of the quarters roughly:
Q1: December 31 to March 31
Q2: April 1 to June 23
Q3: June 26 to September 15
Q4: September 17 to December 16
**** Additional information regarding survey methodology is here.

Figures may not total 100 due to rounding.