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Table 1 Area travelled and number of farms visited per week by geographic region

From: Patterns of between-farm contacts via professionals in Sweden

   Västerbotten Södermanland Västergötland Skåne Jämtland Västmanland Halland
   Mean Median Range Mean Median Range Mean Median Range Mean Median Range Mean Median Range Mean Median Range Mean Median Range
Veterinarians                       
  Area (km2) 1637 1376 220-3208 457 415 65-1021 1366 1234 318-2666 4261 4861 59-8981 - - - - - - - - -
  Number of farms 14 12 9-23 6 6 3-11 24 17 7-55 9 8 1-17 - - - - - - - - -
  Ratio, area/number of farms 117    76    57    47    - - - - - - - - -
Milk tankers                       
  Area (km2) 17842 19585 11518-23512 3674 2170 2170-5679 3066 3066 NA 1683 1101 717-5074 - - - - - - - - -
  Number of farms 45 44 30-66 61 63 57-64 89 89 88-90 48 47 23-84 - - - - - - - - -
  Ratio, area/number of farms 396    60    34    35    - - - - - - - - -
Artificial inseminators                       
  Area (km2) 5001 5307 2356-6874 2892 3013 1044-4661 2587 2521 1495-4018 1660 1481 745-2821 - - - - - - - - -
  Number of farms 13 12 7-18 20 20 14-28 38 39 22-49 21 21 11-29 - - - - - - - - -
  Ratio, area/number of farms 385    145    66    79    - - - - - - - - -
Dairy service technicians                       
  Area (km2) 1116 1233 63-1936 1730 1679 1235-2327 - - - - - - - - - - - - - - -
  Number of farms 4 5 2-5 6 7 4-8 - - - - - - - - - - - - - - -
  Ratio, area/number of farms 279    288    - - - - - - - - - - - - - - -
Livestock hauliers                       
  Area (km2) - - - - - - 21331 16457 4275-48134 NA NA NA 3568 3621 1567-5517 NA NA NA 9748 11925 155-18715
  Number of farms - - - - - - 20 19 18-22 NA NA NA 11 11 9-12 1 1 NA 12 15 4-18
  Ratio, area/number of farms - - - - - - 1067    NA NA NA 324    NA NA NA 812   
  1. NA = not applicable due to data format.
  2. 1 = one value not included in statistical analyses due to data format.
  3. - = data missing.
  4. The area travelled and number of farms visited per week by Swedish veterinarians, milk tankers, artificial inseminators, dairy service technicians and livestock hauliers.