Parameter estimates for rational quadratic model semivariograms used for spatial interpolation of scaup pair counts in 1999 and 2000, from the May Waterfowl Breeding Population and Habitat Survey [27].

asegment pair count in the year given.
bthe year given is the year for which segment pair counts were used as covariates in interpolating the response variable.
All interpolations were conducted using Ordinary Point Cokriging of log(x+1) transformed data, detrended for global trends using polynomial regression, and using counts in the year previous to the data being interpolated as a covariates (see Methods).