Migration flows between family practitioner areas of 1 in 2777 people.

Flows between 1975 and 1976 drawn between the 97 areas from the national information system, on an equal population cartogram — software by author on an Archimedes computer. An optimal threshold at which to stop might be given by the average propensity to migrate, at this scale being about 0.036% of any two areas’ populations. Three quarters of all moves are now shown, but even at this level only the places on the mainland are connected.

Sixth print from a series of six.