The share suggests that the 3.5m peak was during the day, whatever BBC Three were showing yesterday afternoon may have won it's slot.
Also, the 17m peak will be about ~65% to 70%, one has to assume ~2m were watching the football on BBC Three as well.
Also, here is the BBC One top 15/20 from last Monday to Thursday to give an idea of what it will look like when BARB updates a week tomorrow:
7.58m (33%) - Olympics 2012 (THU 1900)
7.47m (32%) - Olympics 2012 (WED 1900)
6.98m (30%) - Olympics 2012 (TUE 1900)
6.37m (27%) - Olympics 2012 (MON 1900)
6.14m (34%) - BBC News at Six (WED 1800)
5.72m (28%) - BBC News at Ten (MON 2200)
5.70m (27%) - BBC News at Ten (THU 2200)
5.60m (41%) - Olympics 2012 (WED 1600)
5.52m (26%) - BBC News at Ten (WED 2200)
5.50m (27%) - BBC News at Ten (TUE 2200)
5.46m (40%) - Olympics 2012 (THU 1600)
5.35m (29%) - BBC News at Six (TUE 1800)
5.10m (27%) - BBC News at Six (MON 1800)
4.84m (36%) - Olympics 2012 (MON 1600)
4.79m (35%) - Olympics 2012 (TUE 1600)
4.63m (25%) - BBC News at Six (THU 1800)
3.82m (37%) - Olympics 2012 (WED 1345)
3.73m (37%) - Olympics 2012 (MON 1345)
rogermosey
More #BBC2012 Saturday TV stats. Apart from Mo's 17.1m: @GregJRutherford 15.6m; women's team pursuit 9.2m; rowing 6.4m; 3.5m peak on BBC3.
11:19 AM - 5 Aug 12
Huge numbers for the team pursuit and the rowing!