VARIABLE	LEGAL_VALUES	DESCRIPTION
INDEX_AP	Y|N|NA	Index visit for Albemarle-Pamlico Study
INDEX_NCCA15		Index visit for NCCA 2015 survey - applies to both estuary and Great Lakes sites that are part of NCCA
SAMPLE_ID		Sample ID
NCCA_COMMENT		NCCA Comment
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."
DATE_ANALYZED		Date sample analyzed by lab
HOLDING_TIME		Time between sampling and analysis (days)
LAB_SAMPLE_ID		Sample id assigned by lab
MDL		Method detection limit
NARS_FLAG		NARS flag
RESULT		Analytical result
ARRIVAL_TEMP		Temperature upon arrival at lab
CAS_NO		CAS Registry Number
CONDITION_CODE		"Condition of smaple upon arrival at lab; Legal values are: OK, C, L, ML, NF, Q"
DILUTION		Dilution factor required to analyze sample
INSTRUMENT		Instrument Id for instrument used to analyze sample
RL		Lab reporting limit
LAB_ANALYTE		Analyte name assigned by lab
MOISTURE		Moisture contect of sample (%)
DATE_RECEIVED		Date sample received by lab.
PSTL_CODE		State (US) or Province (Canada) abbreviation
STUDY		Study name
LAB		Lab that conducted analysis
DATE_COL	|01|02|03|04|05|06|07|08|09|10|11|12	Date collected
SITE_ID		Site id
VISIT_NO	|1|2	Visit: 1/2
YEAR		Year site visited
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
ANALYTE_LBL		EPA name for analyte
ANAL_CAT		"parameter group--METAL, Pesticide (PEST), PCB, PAH (if measured)"
NCCA_TRG		"Is analyte targeted for EPA analysis? Y = yes, N or <blank> = No"
RESULT_UNITS		Result unit
HOLDING_TIME_UNITS		Days
RECOVERY		Percent recovery of spike in blank or matrix
MOISTURE_UNITS		Units for sample moisture
