"DATA_COLUMN"	"SAMPLE_TYPE"	"UNITS"	"LABEL"	"FORMABBR"	"VAR_TYPE"	"RANGE_LOW"	"RANGE_HIGH"	"LEGAL_VALUES"	"REFERENCE"
"AGGR_ECO3_2015"	"DESIGN"	""	"NARS 3-level reporting region (2015), based on aggregating AGGR_ECO9_2015 reporting regions: EHIGH=Eastern Highlands (NAP, SAP); PLNLOW=Plains and Lowlands (CPL, NPL, SPL, TPL, UMW); WMTNS=Western Mountains and Xeric (WMT, XER)."		"CHARACTER"			"EHIGH|PLNLOW|WMTNS"	
"AGGR_ECO9_2015"	"DESIGN"	""	"NARS 9-level reporting region (2015), based on aggregated Omernik Level III ecoregions: CPL=Coastal Plains; NAP=Northern Appalachians; NPL=Northern Plains; SAP=Southern Appalachians; SPL=Southern Plains; TPL=Temperate Plains; UMW=Upper Midwest; WMT=Western Mountains; XER=Xeric West."		"CHARACTER"			"CPL|NAP|NPL|SAP|SPL|TPL|UMW|WMT|XER"	
"BENT_MMI_COND"	"BENT"	""	"Condition class based on benthic MMI score"					"Good|Fair|Poor|No Data"	
"BURRPTAX"	"BENT"	""	"% burrower taxa, based on WSA autecology"			0	100	""	
"CHIRPTAX"	"BENT"	""	"% Chironomidae taxa"			0	100	""	
"CLNGNTAX"	"BENT"	""	"Number of distinct clinger taxa, based on WSA autecology"			0		""	
"CLNGPTAX"	"BENT"	""	"% clinger taxa, based on WSA autecology"			0	100	""	
"COMP_PT"	"BENT"	""	"Metric score for composition metric"			0	10	""	
"DIVS_PT"	"BENT"	""	"Metric score for diversity metric"			0	10	""	
"DOM5PIND"	"BENT"	""	"% individuals in dominant 5 taxa"			0	100	""	
"EPHENTAX"	"BENT"	""	"Number of distinct Ephemeroptera taxa"			0		""	
"EPHEPTAX"	"BENT"	""	"% Ephemeroptera taxa"			0	100	""	
"EPT_NTAX"	"BENT"	""	"Number of distinct Ephemeroptera, Plecoptera, and Trichoptera taxa"			0		""	
"EPT_PIND"	"BENT"	""	"% Ephemeroptera, Plecoptera, and Trichoptera individuals"			0	100	""	
"EPT_PTAX"	"BENT"	""	"% EPT taxa"			0	100	""	
"FEED_PT"	"BENT"	""	"Metric score for functional feeding group"			0	10	""	
"HABT_PT"	"BENT"	""	"Metric score for habit"			0	10	""	
"HPRIME"	"BENT"	"NONE"	"Shannon diversity, where prop_i=proportion of species i in sample"			0		""	
"INTLNTAX"	"BENT"	""	"Number of distinct intolerant taxa"			0		""	
"MMI_BENT"	"BENT"	""	"Benthic MMI score"			0	100	""	
"NOINPIND"	"BENT"	""	"% non-insect individuals"			0	100	""	
"NTOLNTAX"	"BENT"	""	"No. of non-tolerants (PTV<6) taxa"			0			
"NTOLPTAX"	"BENT"	""	"% taxa with pollution tolerance score between 0 and 5.9"			0	100	""	
"OE_COND"	"BENT"	""	"Condition class based on O/E score"	""	""			"GOOD|FAIR|POOR|NO DATA"	
"OE_SCORE"	"BENT"	""	"O/E score for benthic sample"	""	""	0		""	
"RICH_PT"	"BENT"	""	"Metric score for taxa richness"			0	10	""	
"SCRPNTAX"	"BENT"	""	"Number of distinct scraper taxa, based on WSA autecology"			0		""	
"SHRDNTAX"	"BENT"	""	"Number of distinct shredder taxa, based on WSA autecology"			0		""	
"SITE_ID"	"VERIF"	"NONE"	"Site ID"	"StrmVer"	""			""	
"STOLPTAX"	"BENT"	""	"% taxa with pollution tolerance score between 8 and 10"			0	100	""	
"TOLR_PT"	"BENT"	""	"Metric score for tolerance metric"			0	10	""	
"TOLRPTAX"	"BENT"	""	"% Tolerant (PTV>=7) taxa"			0	100		
"VISIT_NO"	"VERIF"	"NONE"	"Number identifying which visit this is"	"StrmVer"	""			""