Timeshift Viewing of broadcast material recorded at home and played back within seven days of recording 
Programme Audiences Average audience throughout the programme.
Share of Total Viewing The percentage of total viewing time accounted for by each channel.
Average Daily/Weekly Reach The percentage (or no. in millions for Breakfast TV Services) of Uk population in private households (excluding guest viewing) who viewed each channel for 3 consecutive minutes or more during the week/average day.
Population All individuals aged four or over in UK private households containing a TV set in working order
Other viewing Viewing to broadcast channels other than BBC1, BBC2, ITV1, Ch4/S4C, five