I'm (somewhat randomly) assembling a list of stations with the fewest services per hour on the Underground. I have generally been thinking about the off peak levels, but would be interested in making a peak list too. I've been considering total LU services to a station, not just particular lines - although it gets a bit muddy if the station gets Overground or other rail services. Marked with an asterisk below!
So far I have:
Less than 1tph: Kensington Olympia
2tph: Amersham*, Chesham
3tph: Roding Valley, Chigwell, Grange Hill
4tph: Chalfont and Latimer*, Chorleywood*, Rickmansworth*, Watford, Croxley, Mill Hill East
6tph: Chiswick Park, Heathrow T4 & T5*, District Richmond branch (all *), Piccadilly North Ealing to South Harrow, Bakerloo line north of Stonebridge Park (all *)
Any more under 8tph that I've missed? Did I get these frequencies right?
There are certainly a number of stations you could add in if you were looking at service from a particular line - for the purposes of my exercise I was considering total tube service from all lines combined. Admittedly, however, there are many ways to skin this cat.