GEO.dbf Alias GEO (continued) 



37 LATMAX C 6 



38 LONGMIN C 7 



39 LONGMAX C 7 



40 LATILONG C 2 



41 DESCRIPTl C 254 



42 DESCRIPT2 C 100 



43 SOURCES C 200 



44 ACCURACY C 1 



Northernmost latitude 

 (degrees, minutes, seconds) 

 Easternmost longitude 

 (degrees, minutes, seconds) 

 Westernmost longitude 

 (degrees, minutes, seconds) 

 Latilong containing site 

 Narrative description 

 Description (continued) 

 Sources of information on site 

 How accurately is site located? 

 (A = to nearest 1/4 section; 



B = to nearest section; 



C = to nearest township; 



D = to nearest county) 

 Value class assignment for uniqueness 

 Value class assignment for previous 

 designation or listing 

 Value class assignment 

 recreational use 

 Value class assignment 

 reference value 



Final value class assignment (equals 

 highest value class received in any of 

 the above four ratling categories) 



for public and 

 for scientific 



A. 1.5. NAT.dbf 



NAT.dbf Alias: NAT 



Master index file: NAT.ndx Key: CODE + FINALVAL 



Structure for database: NAT.dbf 



(The structure of this file is identical to that of GEO.DBF) 



A-8 



