Search Incorrectly spot elevation

Good afternoon, colleagues!
We have the following task:
We need to analyze the survey points (spot elevation) of the topographic surface for incorrectly values. Either the value is too high or too small compared to the marks standing next to it.
The elevation value was put by mistake.
How can such a problem be solved?
It is necessary to set the search radius (range) from the search point and the value of the difference and so on automatically.

Points.dwg (473.1 KB)
Civil_3D_Search_Incorrectly_Spot_Elevation.dyn (11.2 KB)