SAMPLE_TYPE	VARIABLE	LEGAL_VALUES	DESCRIPTION
SECC	SECCHI_COMMENT		
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