Circular model

1976

1991

2000

2005

2011

2015

Sill

0.0015

0.0012

0.0007

0.0011

0.0008

0.0010

Range (m)

700.5

762.5

797.9

1100.7

1079.1

1200.6

Root-mean-square (RMS)

0.031

0.038

0.017

0.017

0.028

0.023

Average standard error

0.002

0.006

0.016

0.060

0.013

0.054

Mean standardized

0.001

0.033

0.021

0.017

0.007

0.015

Root-mean-square-standardized

1.591

1.681

1.657

1.613

1.672

1.651