Tom Daley and Peter Waterfield, who topped the table after the first few dives, eventually finished in fourth place.
BBC One attracted an average audience of 3.82m (37.3%) between 1.45pm and 4pm, while the channel managed a peak share of 52%.
Then from 4pm, Britain's unexpected bronze in the mens' gymnastics was witnessed by 4.83m (35.1%), before 6.37m (27%) watched swimming from the Aquatics Centre.
Zara Phillips's involvement in the cross-country stage of the equestrian competition pulled in 1.7m (21.8%) between 11.45am and 1pm. Some 2.17m (32.1%) tuned in for rowing from 9am.
BBC Three's wall-to-wall coverage mustered a strong set of ratings, with 1.03m (7.7%) from 2pm and 1.15m (5.2%) between 7pm and 11pm.
More people watched the BBC's coverage online, with the corporation posting record figures for its website and iPlayer yesterday.
> London 2012: Today's Olympics TV Guide - Tuesday, July 31
> Olympics London 2012 TV Guide: Week Two
BARB ratings data supplied by Attentional