The Series 9 opener, The Magician's Apprentice, had an Audience Appreciation (AI) score of 84.
The Appreciation Index or AI is a measure of how much the audience enjoyed the programme. The score, out of a hundred, is compiled by a specially selected panel of around 5,000 people who go online and rate and comment on programmes.
This shows Doctor Who is still consistently achieving, with the AI score about level with the Series 8 average 83.3. 52% of the viewers that responded strongly agreed the programme was 'fresh' and 'new' .