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Table 1 Scores given for a Potential Surface Analysis (PSA)

From: Spatial characterization of colonies of the flying fox bat, a carrier of Nipah Virus in Thailand

Flying fox distribution zones (probability during 0 to1) Distance to the flying foxes colonies (km) Pig farm density (farm per km 2 ) House density (house per km 2 )
Scale R W R*W Scale R W R*W Scale R W R*W Scale R W R*W
0.83x10−3 - 0.83x10−2 1 2 2 <5 9 1 9 0 0 3 0 0.13 – 907 2 3 6
0.84x10−2 - 0.14 2 2 4 5-10 8 1 9 0.9x10−3 -0.035 1 3 3 908-1968 4 3 12
0.15 - 0.27 3 2 6 10-20 7 1 7 0.036-0.88 2 3 6 1969-3028 3 3 9
0.28 - 0.87 4 2 8 20-30 5 1 5 0.89-1.72 3 3 9 3029-12510 1 3 3
     30-50 3 1 3 1.73-2.56 4 3 12     
     >50 1 1 7 2.57-16.55 5 3 15     
  1. R = rating score W = weighting score.
  2. Weighting and rating scores of 4 factors used to map the overlay between NiV hosts on the central plain of Thailand.