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Table 3 Semi-variogram estimates of the sill and range for the bird and human data from 2002 to 2005 as well as the average of the four years.

From: Investigating the spatial risk distribution of West Nile virus disease in birds and humans in southern Ontario from 2002 to 2005

 

Sill

Range

Bird 2002

82.29

81368.91

Bird 2003

82.34

132874.38

Bird 2004

56.34

245213.13

Bird 2005

355.07

335208.03

Bird Total

71.60

180000.00

Human 2002

3.03

184517.40

Human 2003

0.11

158159.40

Human 2004

0.001

101754.00

Human 2005

3.41

1270482.00

Human Total

1.04

112422.00