Spherical model | 1976 | 1991 | 2000 | 2005 | 2011 | 2015 |
Sill | 0.0015 | 0.0012 | 0.0007 | 0.0011 | 0.0008 | 0.0010 |
Range (m) | 700.5 | 766.5 | 799.9 | 1040.7 | 1099.1 | 1101 |
Root-mean-square (RMS) | 0.031 | 0.008 | 0.017 | 0.017 | 0.028 | 0.023 |
Average standard error | 0.002 | 0.056 | 0.016 | 0.060 | 0.063 | 0.054 |
Mean standardized | 0.021 | 0.003 | 0.001 | 0.027 | 0.007 | 0.015 |
Root-mean-square-standardized | 1.501 | 1.281 | 1.057 | 1.213 | 1.172 | 0.951 |