VARIABLE	DESCRIPTION	SAMPLE_TYPE	UNITS	RANGE_LOW	RANGE_HIGH	LEGAL_VALUES
CLASS	Class of taxon	TAXA: Invertebrates				
FAMILY	Family of taxon	TAXA: Invertebrates				
FFG	"Functional feeding group used in metric calculations;Collector-filterer(CF),Collector-gatherer(CG),Parasite(PA),Piercer(PI),Scraper(SC),Shredder(SH)"	TAXA: Invertebrates				
FFG_WSA	"Functional feeding group assignment used in WSA-based metrics;Collector-filterer(CF),Collector-gatherer(CG),Parasite(PA),Piercer(PI),Scraper(SC),Shredder(SH)"	TAXA: Invertebrates				
GENUS	Genus of taxon	TAXA: Invertebrates				
HABIT	"Habit used in metric calculations;Burrower(BU),Climber(CB),Clinger(CN),Diver(DV),Planktonic(PK),Skater(SK),Sprawler(SP),Swimmer(SW)"	TAXA: Invertebrates				
HABIT_WSA	"Habit group assignment used in WSA-based metrics;Burrower(BU),Climber(CB),Clinger(CN),Diver(DV),Planktonic(PK),Skater(SK),Sprawler(SP),Swimmer(SW)"	TAXA: Invertebrates				
ITISTSN	Taxonomic Serial Number assigned by IT IS	TAXA: Invertebrates				
NON_TARGET	Operational taxon unit for NRSA O/E	TAXA: Invertebrates				
ORDER	Order of taxon	TAXA: Invertebrates				
OTU_NRSA	Family name	TAXA: Invertebrates				
PHYLUM	Phylum of taxon	TAXA: Invertebrates				
PTV	Pollution tolerance value as assigned for NWSA	TAXA: Invertebrates				
PTV_WSA	Pollution tolerance value used in WSA-based metrics	TAXA: Invertebrates				
PUBLICATION_DATE	Date of data file publication					
PUBLICATION_DATE	Date of data file publication					
PUBLICATION_DATE	Date of data file publication					
SUBFAMILY	Subfamily of taxon	TAXA: Invertebrates				
TARGET_TAXON	Name of taxon at target taxon level	TAXA: Invertebrates				
TARGET_TAXON	TAXANAME AT TARGET HIERARCHICAL TAXONOMIC LEVEL	BETB				
TAXA_ID	Taxonomic ID number					
TAXA_ID	Taxonomic ID number					
TAXA_ID	Taxonomic ID number					
TRIBE	Tribe of taxon	TAXA: Invertebrates				
VOLTINISM	Voltinism as assigned by USGS	TAXA: Invertebrates