ERDDAP > info > bcodmo_dataset_517634

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[HPLC Pigments] - HPLC pigment analyses of CTD-collected samples from R/V Knorr cruise KN207- 03 in the North Atlantic (transect from Ponta Delgada, Azores to Reykjavik, Iceland) in 2012 (NA-VICE project) (Lipid lubrication of oceanic carbon and sulfur biogeochemistry via a host-virus chemical arms race)		F   I   M	background			BCO-DMO	bcodmo_dataset_517634

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute	NC_GLOBAL	acquisition_description	String	Water samples were collected from CTD Niskin bottles. Water samples for HPLC analyses were taken from one Niskin bottle per cast-depth combination included in the dataset. Note that the niskin_sampled column indicates which Niskin bottle the HPLC sample was taken from. The niskins_fired column indicates all Niskin bottle numbers fired at the specified depth, though the HPLC sample was taken from only one of those bottles. Chlorophyll and accessory pigment composition was analyzed by high performance liquid chromatography (HPLC; Agilent 1100). Culture aliquots were filtered on Whatmann GF/F filters, flash frozen in liquid nitrogen, and stored at -80\u00b0C until analysis. Just prior to analysis, pigments were extracted overnight in acetone at -20\u00b0C. The following day extracted pigments were centrifuged and measured using a gradient elution method (DiTullio and Geesey, 2003), a modification of the Zapata et al 2000 method. Chromatographic separation was performed using a Waters C8 symmetry column, photodiode array and fluorescence detectors. The internal standard, \u03b2-Apo-8-carotenal- trans standard (Fluka Chemical Corp., USA) was added to extracted pigments as a peak reference. Individual pigment peaks were quantified with Chemstation software (revision B.03.01, Agilent) and our pigment action spectra library calibrated using pigment standards from DHI LABS (Hoersholm, Denmark) and in- house purifications of non-commercially available pigments. Coefficient of variation among replicate HPLC injections is < 3% and our limit of detection is approximately 1 ng L-1.
attribute	NC_GLOBAL	awards_0_award_nid	String	54870
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1061876
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1061876
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	HPLC Pigments PI: Giacomo R. DiTullio Contact: Emily Cooper Version History: Current version: 17 Sept 2014 Dataset revised: 12 Sept 2014 Original dataset: 26 June 2014
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2014-06-26T15:57:25Z
attribute	NC_GLOBAL	date_modified	String	2019-12-30T15:40:59Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.517634.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-26.102033
attribute	NC_GLOBAL	geospatial_lat_max	double	65.447967
attribute	NC_GLOBAL	geospatial_lat_min	double	42.963
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-26.102033
attribute	NC_GLOBAL	geospatial_lon_min	double	-35.0733
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	150.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	3.0
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/517634
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Niskin bottle
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	517688
attribute	NC_GLOBAL	instruments_0_description	String	A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24 or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Niskin bottle
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	413
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Niskin bottle
attribute	NC_GLOBAL	instruments_1_acronym	String	HPLC
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Chlorophyll and accessory pigment composition was analyzed by high performance liquid chromatography (HPLC; Agilent 1100).
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	517637
attribute	NC_GLOBAL	instruments_1_description	String	A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB11/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	High Performance Liquid Chromatograph
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	506
attribute	NC_GLOBAL	instruments_1_supplied_name	String	HPLC
attribute	NC_GLOBAL	keywords	String	amb, amb_bot, bco, bco-dmo, biological, bot, cast, chemical, concentration, data, dataset, date, date_gmt, date_local, depth, dmo, erddap, filt, filt_vol, fired, iso, ISO_DateTime_UTC, lat_deg, lat_min, latitude, local, lon_deg, lon_min, longitude, management, niskin, niskin_sampled, niskins, niskins_fired, oceanography, office, pigment, preliminary, sampled, station, time, time_gmt, time_local, vol
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/517634/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/517634
attribute	NC_GLOBAL	Northernmost_Northing	double	65.447967
attribute	NC_GLOBAL	param_mapping	String	{'517634': {'lat': 'flag - latitude', 'depth': 'flag - depth', 'lon': 'flag - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/517634/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Grice Marine Laboratory - College of Charleston
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	GML-CoC
attribute	NC_GLOBAL	people_0_person_name	String	Giacomo DiTullio
attribute	NC_GLOBAL	people_0_person_nid	String	50689
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Grice Marine Laboratory - College of Charleston
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	GML-CoC
attribute	NC_GLOBAL	people_1_person_name	String	Emily Cooper
attribute	NC_GLOBAL	people_1_person_nid	String	517640
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	people_2_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_2_person_nid	String	51498
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	NA-VICE
attribute	NC_GLOBAL	projects_0_acronym	String	NA-VICE
attribute	NC_GLOBAL	projects_0_description	String	This project is also called "NA-VICE" (North Atlantic Virus Infection of Coccolithophores Expedition). Project description from NSF award abstract: Despite the critical importance of viruses in shaping marine microbial ecosystems, very little is known about the molecular mechanisms mediating phytoplankton-virus interactions. As a consequence, we currently lack biomarkers to quantify active viral infection in the oceans, significantly hindering our understanding of its ecological and biogeochemical impacts. The coccolithophore Emiliania huxleyi (Prymnesiophyceae, Haptophyte) is a cosmopolitan unicellular photoautotroph whose calcite skeletons account for about a third of the total marine CaCO3 production. E. huxleyi forms massive annual spring blooms in the North Atlantic that are infected and terminated by lytic, giant double-stranded DNA containing coccolithoviruses. Findings that lytic viral infection of E. huxleyi recruits the hosts programmed cell death (PCD) machinery demonstrate that viruses employ a sophisticated, co-evolutionary “arms race” in mediating host-virus interactions. The investigators recently demonstrated that viral glycosphingolipids (vGSLs), derived from unexpected cluster of sphingolipid biosynthetic genes, a pathway never before described in a viral genome, play a crucial functional role in facilitating infection of E. huxleyi. The observations of vGSLs in the North Atlantic and Norwegian fjords further suggest that they may be novel, diagnostic biomarkers for viral infection of coccolithophore populations. At the same time, the discovery of vGSLs and a distinct, protective 802 lipid argues that a host-virus, co-evolutionary chemical arms race plays a pivotal role in regulating viral infection and in lubricating upper ocean biogeochemical fluxes of carbon and sulfur. The focus of this collaborative research project is to elucidate the molecular, ecological, and biogeochemical links between vGSLs (and other polar lipids) and the global cycles of carbon and sulfur. The team of investigators proposes a multi-pronged approach combing a suite of lab-based, mechanistic studies using several haptophyte-virus model systems along with observational studies and manipulative field-based experiments the Northeast Atlantic. Using these diagnostic markers, they will document active viral infection of natural coccolithophore populations and couple it with a suite of oceanographic measurements in order to quantify how viral infection (via vGSLs) influences cell fate, the dissolved organic carbon (DOC) pool, vertical export of particular organic (POC) and inorganic carbon (PIC; as calcium carbonate, CaCO3) (along with associated alkenone lipid biomarkers and genetic signatures of viruses and their hosts) and the upper ocean sulfur cycle (via the cycling of dimethylsulfide [DMS] and other biogenic sulfur compounds). Furthermore, given they are unique to viruses, the investigators propose that vGSLs can be used to trace the flow of virally-derived carbon and provide quantitative insights into a “viral shunt” that diverts fixed carbon from higher trophic levels and the deep sea. The overarching hypothesis for this study is that vGSLs are cornerstone molecules in the upper ocean, which facilitate viral infection on massive scales and thereby mechanistically "lubricate" the biogeochemical fluxes of C and S in the ocean.
attribute	NC_GLOBAL	projects_0_end_date	String	2014-02
attribute	NC_GLOBAL	projects_0_geolocation	String	North Atlantic; Azores to Iceland
attribute	NC_GLOBAL	projects_0_name	String	Lipid lubrication of oceanic carbon and sulfur biogeochemistry via a host-virus chemical arms race
attribute	NC_GLOBAL	projects_0_project_nid	String	2136
attribute	NC_GLOBAL	projects_0_start_date	String	2011-03
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	42.963
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Dataset includes HPLC pigment analyses of CTD collected samples from the KN207-03 cruise (Northeast Atlantic Ocean transect from Azores to Iceland).
attribute	NC_GLOBAL	time_coverage_start	String	2012-06-17T11:00:00Z
attribute	NC_GLOBAL	title	String	[HPLC Pigments] - HPLC pigment analyses of CTD-collected samples from R/V Knorr cruise KN207-03 in the North Atlantic (transect from Ponta Delgada, Azores to Reykjavik, Iceland) in 2012 (NA-VICE project) (Lipid lubrication of oceanic carbon and sulfur biogeochemistry via a host-virus chemical arms race)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-35.0733
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	cast		String
attribute	cast	bcodmo_name	String	cast
attribute	cast	description	String	Cast number.
attribute	cast	long_name	String	Cast
attribute	cast	units	String	alphanumeric
variable	station		String
attribute	station	bcodmo_name	String	station
attribute	station	description	String	Station name.
attribute	station	long_name	String	Station
attribute	station	units	String	text
variable	date_gmt		String
attribute	date_gmt	bcodmo_name	String	date_gmt
attribute	date_gmt	description	String	Date of cast (GMT). in the format mmddyyyy
attribute	date_gmt	long_name	String	Date Gmt
attribute	date_gmt	units	String	unitless
variable	time_gmt		String
attribute	time_gmt	bcodmo_name	String	time_gmt
attribute	time_gmt	description	String	Time of cast (GMT). in the format hhmmss
attribute	time_gmt	long_name	String	Time Gmt
attribute	time_gmt	units	String	unitless
variable	date_local		String
attribute	date_local	bcodmo_name	String	date_local
attribute	date_local	description	String	Date of cast (local time zone). in the format mmddyyyy
attribute	date_local	long_name	String	Date Local
attribute	date_local	units	String	unitless
variable	time_local		String
attribute	time_local	bcodmo_name	String	time_local
attribute	time_local	description	String	Time of cast (local time zone). in the format hhmmss
attribute	time_local	long_name	String	Time Local
attribute	time_local	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	42.963, 65.447967
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	Latitude. Positive values = North.
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	-35.0733, -26.102033
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	Longitude. Positive values = East.
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	lat_deg		byte
attribute	lat_deg	_FillValue	byte	127
attribute	lat_deg	actual_range	byte	42, 65
attribute	lat_deg	bcodmo_name	String	lat_degs
attribute	lat_deg	colorBarMaximum	double	90.0
attribute	lat_deg	colorBarMinimum	double	-90.0
attribute	lat_deg	description	String	Degrees latitude.
attribute	lat_deg	long_name	String	Latitude
attribute	lat_deg	standard_name	String	latitude
attribute	lat_deg	units	String	degrees North
variable	lat_min		float
attribute	lat_min	_FillValue	float	NaN
attribute	lat_min	actual_range	float	0.0, 59.83
attribute	lat_min	bcodmo_name	String	lat_mins
attribute	lat_min	colorBarMaximum	double	90.0
attribute	lat_min	colorBarMinimum	double	-90.0
attribute	lat_min	description	String	Minutes latitude.
attribute	lat_min	long_name	String	Latitude
attribute	lat_min	standard_name	String	latitude
attribute	lat_min	units	String	minutes North
variable	lon_deg		byte
attribute	lon_deg	_FillValue	byte	127
attribute	lon_deg	actual_range	byte	26, 35
attribute	lon_deg	bcodmo_name	String	lon_degs
attribute	lon_deg	colorBarMaximum	double	180.0
attribute	lon_deg	colorBarMinimum	double	-180.0
attribute	lon_deg	description	String	Degrees longitude. Positive = West.
attribute	lon_deg	long_name	String	Longitude
attribute	lon_deg	standard_name	String	longitude
attribute	lon_deg	units	String	degrees West
variable	lon_min		float
attribute	lon_min	_FillValue	float	NaN
attribute	lon_min	actual_range	float	0.0, 56.884
attribute	lon_min	bcodmo_name	String	lon_mins
attribute	lon_min	colorBarMaximum	double	180.0
attribute	lon_min	colorBarMinimum	double	-180.0
attribute	lon_min	description	String	Minutes longitude. Positive = West.
attribute	lon_min	long_name	String	Longitude
attribute	lon_min	standard_name	String	longitude
attribute	lon_min	units	String	minutes West
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.3399308E9, NaN
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	Date and time of cast formatted to ISO8601 standard.
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO Date Time UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	3.0, 150.0
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	Depth of Niskin bottle firing.
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	amb_bot		String
attribute	amb_bot	bcodmo_name	String	bottle
attribute	amb_bot	description	String	Amber bottle identification number.
attribute	amb_bot	long_name	String	Amb Bot
attribute	amb_bot	units	String	integer
variable	niskin_sampled		byte
attribute	niskin_sampled	_FillValue	byte	127
attribute	niskin_sampled	actual_range	byte	1, 24
attribute	niskin_sampled	bcodmo_name	String	bottle
attribute	niskin_sampled	description	String	Niskin bottle number from which HPLC sample was taken.
attribute	niskin_sampled	long_name	String	Niskin Sampled
attribute	niskin_sampled	units	String	integer
variable	niskins_fired		String
attribute	niskins_fired	bcodmo_name	String	bots
attribute	niskins_fired	description	String	Niskin bottle numbers fired at depth; HPLC sample was taken from one Niskin bottle.
attribute	niskins_fired	long_name	String	Niskins Fired
attribute	niskins_fired	units	String	range of integers
variable	filt_vol		float
attribute	filt_vol	_FillValue	float	NaN
attribute	filt_vol	actual_range	float	0.96, 2.15
attribute	filt_vol	bcodmo_name	String	fluor_vol_filt
attribute	filt_vol	description	String	Volume of water filtered.
attribute	filt_vol	long_name	String	Filt Vol
attribute	filt_vol	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/VOLFMCXX/
attribute	filt_vol	units	String	liters (L)
variable	pigment		String
attribute	pigment	bcodmo_name	String	pigment_concentration
attribute	pigment	description	String	Name of the pigment measured: chl_c3 = Chlorophyll c3; chl_ide = Chlorophyllide a; mg_dvp = Magnesium-2;4-divinyl phaeoporphyrin a5 monomethyl ester; chl_c2 = Chlorophyll c2; chl_c1 = Chlorophyll c1; peridinin = Peridinin; but19 = 19-butanoyloxyfucoxanthin; fucox = Fucoxanthin; ph_ide = Pheophorbide a; neox = Neoxanthin; prasinox = Prasinoxanthin; violax = Violaxanthin; hex19 = 19'-hexanoyloxyfucoxanthin; diadinox = Diadinoxanthin; cis_fucox = cis-Fucoxanthin; allox = Alloxanthin; diatox = Diatoxanthin; monad = Monadoxanthin; zeax = Zeaxanthin; lutein = lutein; crocox = Crocoxanthin; chl_b = Chlorophyll b; dv_chl_a = Divinyl Chlorophyll a; chl_a = Chlorophyll a; p_phytin = Phaeophytin a; carotene_a = alpha Carotene; carotene_b = beta Carotene.
attribute	pigment	long_name	String	Pigment
attribute	pigment	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/OPWC/
attribute	pigment	units	String	text
variable	concentration		short
attribute	concentration	_FillValue	short	32767
attribute	concentration	actual_range	short	0, 2204
attribute	concentration	bcodmo_name	String	pigment_concentration
attribute	concentration	description	String	Concentration of the pigment as determined by HPLC.
attribute	concentration	long_name	String	Concentration
attribute	concentration	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/OPWC/
attribute	concentration	units	String	nanograms per liter (ng/L)

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.