5m2 per day in residential for the Peterborough area. I would say that's about right.
But by residential i mean not new builds or site work. Peterborough has grown quite rapidly since the early 70's. A large majority of the homes here are relatively new builds located in townships that have been around the city. That being said the average and most common size bathroom is 8' x 6' (2.4m x 1.8m in new money). So your window wall about 3.5sq metres. Your wall with the doorway in little 2" slithers down oneside and the shower pipes over the bath to cut would make you up to just over 5sq metres. That in my eyes to set out,
tile including all cuts and tiles around pipework is a good days work.
And as PRCeramics said 5sq metres around a kitchen work surface tiled (and prehaps grouted) would also be a good days work in my opinion.