"SAMPLE_TYPE"	"VARIABLE"	"LEGAL_VALUES"	"DESCRIPTION"
"HYDRO"	"COMMENT"	""	
"EVALVIS"	"INDEX_AP"	"Y|N|NA"	"Index visit for Albemarle-Pamlico Study"
"EVALVIS"	"INDEX_NCCA15"		"Index visit for NCCA 2015 survey - applies to both estuary and Great Lakes sites that are part of NCCA"
"FPLG"	"ACTUAL_DATE"	""	"Actual date of sample"
"FPLG"	"SAMPLE_ID"	""	"Sample ID"
"ALGX"	"METHOD"		" U.S. Geological Survey Organic Geochemistry Research Laboratory liquid chromatography triple quadrupole mass spectrometry (LC/MS/MS) method identification code: LCTX is for freshwater analysis of selected cyanotoxins and  algal toxins, LCTXM was developed for brackish and saline analysis of selected cyanotoxins and algal toxins, but can also be used for freshwater analysis."
"CHEM"	"DATE_ANALYZED"		"Date sample analyzed by lab"
"CHEM"	"HOLDING_TIME"		"Time between sampling and analysis (days)"
"CHEM"	"LAB_SAMPLE_ID"		"Sample id assigned by lab"
"CHEM"	"MDL"		"Method detection limit"
"CHEM"	"NARS_FLAG"		"NARS flag"
"CHEM"	"RESULT"		"Analytical result"
"FPLG"	"ARRIVAL_TEMP"		"Temperature upon arrival at lab"
"FPLG"	"CAS_NO"		"CAS Registry Number"
"FPLG"	"CONDITION_CODE"		"Condition of smaple upon arrival at lab; Legal values are: OK, C, L, ML, NF, Q"
"FPLG"	"DILUTION"		"Dilution factor required to analyze sample"
"FPLG"	"INSTRUMENT"		"Instrument Id for instrument used to analyze sample"
"FPLG"	"RL"		"Lab reporting limit"
"DESIGN"	"PSTL_CODE"		"State (US) or Province (Canada) abbreviation"
"DESIGN"	"STUDY"		"Study name"
"ALGX"	"LAB"		"Lab that conducted analysis"
"VERIF"	"DATE_COL"	"|01|02|03|04|05|06|07|08|09|10|11|12"	"Date collected"
"VERIF"	"SITE_ID"	""	"Site id"
"VERIF"	"VISIT_NO"	"|1|2"	"Visit: 1/2"
"VERIF"	"YEAR"	""	"Year site visited"
"DESIGN"	"NCCA_REG"	"Northeast|Southeast|Gulf|West|Great Lakes|"	"National Coastal Condition Assessment Region.  Northeast includes states ME, NH, MA, RI, CT, NY, NJ, MD, DE, and VA.  Southeast includes NC, SC, GA, and east coast of FL.  No missing values allowed."
	"PUBLICATION_DATE"		"Date the dataset was published to the NARS site"
	"UID"		"Unique identifier for the site/visit"
	"BATCH_ID"		"Laboratory batch number"
	"SAM_CODE"		"Sample code (Regular/Lab duplicate/Lab split)"
	"ANALYTE"		"Analyte"
	"MATRIX"		"Material used for analysis"
	"SAMPLE_TYPE"		"Code identifying sample type"
	"RESULT_UNITS"		"Result unit"
	"HOLDING_TIME_UNITS"		"Days"
