Surname profile: a city, 1871

This table is meant as an example only so please treat with care as this is my interpretation of the column headings.

% City City
1871 Census- District A? 1871 Census-District B?
Number of names Households sampled Households sampled
10 12.6 15.9
20 36.6 50.2
30 72.2 109.3
40 123 200
50 185
60 278
Source 1200 households in frame 13200 households in frame

More help required here. Has anyone performed a surname profile analysis of an urban enumeration district? And correlated the results with other information e.g. age, birthplace, occupation