"COLUMN_NAME"	"LABEL"	"LEGAL_VALUES"
"CALIBRATION_VERIFIED"	"Calibration verified"	"|Y|N"
"DUPLICATE_DO"	"Duplicate DO reading taken"	"|YES|NO|Y|N"
"DEPTH"	"Depth at collection point"	
"ODOR"	"Odor Type"	"|NONE|H2S|ANOXIC|OIL|CHEMICAL|OTHER.*"
"ARRIVAL_TIME"	"Time of arrival to index site"	
"CONDUCTIVITY"	"Conductivity for index profile"	
"DEPTH_METHOD"	"Method for depth measurements"	"|LINE|SONAR|POLE|ESTIMATE"
"DO2_2M"	"Dissolved oxygen averaged over the top 2 m of water"	
"E_FILE"	"Profile data submitted via external file"	"|YES|NO|Y|N"
"INDEX_GPS_FIX"	"Type of GPS at the index site (2D, 3D)"	"|2D|3D"
"INDEX_LAT_DD"	"Lattitude in decimal degrees at index site"	
"INDEX_LON_DD"	"Longitude in decimal degrees at index site"	
"INDEX_SITE_DEPTH"	"Depth at the index site"	
"METALIMNION"	"Depth indicated for (T)op and (B)ottom of the metalimnion"	"|T|B"
"OXYGEN"	"Oxygen for index profile"	
"PH"	"PH for index profile"	
"PRECIPITATION"	"Precipitation at index site"	"|NONE|LIGHT|HEAVY"
"SCUM"	"Scum present"	"|YES|NO"
"SCUM_DESC"	"Description of scum"	
"SURFACE_COND"	"Lake surface conditions"	"|FLAT|RIPPLES|CHOPPY|WHITECAPS"
"TEMP_CORRECTED"	"Conductivity temperature corrected"	"|Y|N"
"TEMPERATURE"	"Temperature for index profile"	
"PSTL_CODE"	"State two letter postal code for site sampled. 50 state postal codes plus AS, MP, GU, PR, VI for American Samoa, Commonwealth of Northern Marianas, Guam, Puerto Rico and Virgin Islands.  No missing values allowed."	
"SITE_ID"	"The NLA Site ID  for the study and year sampled.  Preferred form is NLAnn_MM-xxxxx  where  nn is current cycle year (07, 12, 17, etc), MM is two letter state code, and xxxxx is between 10001 and 99999. No missing values allowed."	
"UNIQUE_ID"	"Unique site ID based on location that does not depend on year sampled or any other factor.  Form is NLA_ss_nnnnn  where ss state and nnnnn is number that starts at 10001.   No missing or \"blank\" values allowed."	
"DATE_COL"	"Date of sample collection"	
"VISIT_NO"	"Sequential number of visit to site"	"|1|2"
"COMMENT"	"Additional comments"	
"LINE"	"Line number"	
"PUBLICATION_DATE"	"Date the dataset was published to the NARS site"	
"SAMPLE_TYPE"	"Code identifying sample type"	
"UID"	"Unique identifier for the site/visit"