The overnight viewing figures for the third episode (about Europe) of the David Tennant narrated Earthflight were that it received 4.13million viewers which was 16.5% of the viewing public at that time.
That figure meant that Earthflight was the third most popular programme on BBC One for the day after EastEnders (9.3m) and New Tricks (5.1m).
It was also the fifth most popular show of the day over all the British television stations (after Coronation Street and Emmerdale).
These are very satisfactory figures considering Earthflight is not a long running programme with an established viewing public.
The figure of 4.13million was 500,000 down on the second episode which usually happens as the BBC do not promote programmes so much during their run.
Overnights for the first episode were that it achieved 5.12m viewers which was 20.2% of the viewing public at that time. However the figures for all programmes that week were much higher during to it being between Christmas and New Year.
During the hour the programme was on air #Earthflight trended worldwide on Twitter during the first episode was mainly the second most tweeted item in the UK during episode two but unfortunately did not trend at all during last night's broadcast.
The final (adjusted) figures are announced about 10 days after broadcast.
