

| Residual signal between 2003
GPSBM’s and GEOID03 |
|
| -after modeling with MMLSC,
very little systematic signal is left |
|
| -several spike values are
observed and represent points that are similarly suspect to those that are
already removed |
|
| -some of these points were
subsequently removed (they are counted in the 123 total removed points) but
the overall model did not change by their removal |
|