Information released could contain information about the location of the information. It does not mean that information has to be geographic but has some fields identifying the location of the information.
|Level 1. No geographic information
The information released has not any field referring to the location
|Level 2. Simple text field
The geographic information is just a text field or an own Id that makes difficult to connect this information with other databases.
1) Field name: City, value: Astorga
|Level 3. Complex text field
The geographic information are several fields with text description (the number of a street would be consider as a text). And the fields are hierarchical
1) Field1: Country, value : Spain, Field2: City, value: Astorga
|Level 4. Coordinates
The geographic information include two fields with the coordinates (in some standardized system of coordinates)
1) Field1, Latitude, value :42.605556, Field2 longitude, value: -5.5
|Level 5. Full geographical information
It includes levels 3 and 4
1) Field1, Latitude, value :42.605556, Field2 longitude, value: -5.5, field 3: Country, value: Spain, field 4: city, value : León
In case of several text fields but not clearly creating a unique address it should be considered level 2. When some fields are present but not always filled with values it should be considered as filled unless (never were filled with information)