Figure 3
From: Patterns of between-farm contacts via professionals in Sweden
Geographic area travelled by Swedish milk tankers, per week. Travel area of seven Swedish milk tankers from three different dairy companies in 2012 and 2013, scale 1: 7 500 000. Time periods depicted: 8 - 14 October, 2012 or 7 - 13 October 2013: purple; 7 -13 January, 2013: black; 8 - 14 April 2013: light blue; 8 - 14 July: dark blue.