| above |                             EnumerationLiteral
 |                     0 |                                 Height above specified location. |         
                              | 
                                      | 
            
        
                            | aboveSeaLevel |                             EnumerationLiteral
 |                     1 |                                 Height above mean sea high water level. |         
                              | 
                                      | 
            
        
                            | aboveStreetLevel |                             EnumerationLiteral
 |                     2 |                                 Height above street level. |         
                              | 
                                      | 
            
        
                            | at |                             EnumerationLiteral
 |                     3 |                                 At height of specified location. |         
                              | 
                                      | 
            
        
                            | atSeaLevel |                             EnumerationLiteral
 |                     4 |                                 At mean sea high water level. |         
                              | 
                                      | 
            
        
                            | atStreetLevel |                             EnumerationLiteral
 |                     5 |                                 At street level. |         
                              | 
                                      | 
            
        
                            | below |                             EnumerationLiteral
 |                     6 |                                 Height below specified location. |         
                              | 
                                      | 
            
        
                            | belowSeaLevel |                             EnumerationLiteral
 |                     7 |                                 Height below mean sea high water level. |         
                              | 
                                      | 
            
        
                            | belowStreetLevel |                             EnumerationLiteral
 |                     8 |                                 Height below street level. |         
                              | 
                                      | 
            
        
                            | undefined |                             EnumerationLiteral
 |                     9 |                                 Undefined height reference. |         
                              | 
                                      | 
            
        
                            | unknown |                             EnumerationLiteral
 |                     10 |                                 Unknown height reference. |         
                              | 
                                      | 
            
        
                            | other |                             EnumerationLiteral
 |                     11 |                                 Other than as defined in this enumeration. |         
                              | 
                                      |