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.
The score of 82 is slightly below Doctor Who's usual average, but remains in the 'good' category. Kill the Moon achieved the same AI as three other episodes this season. The AIs for the series so far are as follows:
- Into the Dalek & Time Heist - 84
- The Caretaker - 83
- Deep Breath, Robot of Sherwood, Listen & Kill the Moon - 82
[Source: Doctor Who News]