"SAMPLE_TYPE"	"VARIABLE"	"LEGAL_VALUES"	"DESCRIPTION"
"SECC"	"SECCHI_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"
"HYDRO"	"NCCA_COMMENT"		"NCCA Comment"
"HYDRO"	"STATION_DEPTH"	""	
"CHEM"	"NARS_FLAG"		"NARS flag"
"SECC"	"CLEAR_TO_BOTTOM"	"|Y|N"	"Secchi disk clear to bottom"
"SECC"	"DISAPPEARS"	""	"Depth secchi disappears"
"SECC"	"MEAN_SECCHI_DEPTH"		"Mean Secchi depth (m), either measured or estimated from other information"
"SECC"	"REAPPEARS"	""	"Depth secchi  reappears"
"SECC"	"SECCHI_TIME"	""	"Time of secchi reading"
"DESIGN"	"PSTL_CODE"		"State (US) or Province (Canada) abbreviation"
"DESIGN"	"STUDY"		"Study name"
"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"
	"REP"		"Sequential replicate number"
	"SAMPLE_TYPE"		"Code identifying sample type"
