A nit is a unit of luminance equal to one candela per square metre. It is often used to quote the brightness of computer displays, which typically have luminances of 200 to 300 nits.
... station[?]
North End tube station[?] (aka Bull & Bush; never opened)
North Weald tube station[?]
Ongar tube station[?]
St Mary's (Whitechapel Road) tube ...