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.
In The Forest Of The Night shares it’s AI of 83 with The Caretaker, and is seemed to be around the average over the past nine years of Doctor Who AIs – you can see the rest of the AIs for Series 8 below.
- Mummy on the Orient Express & Flatline – 85
- Into The Dalek & Time Heist – 84
- The Caretaker and In The Forest Of The Night – 83
- Deep Breath, Robots of Sherwood, Listen & Kill the Moon – 82
[Source : Doctor Who TV]