methods uncertainty values

Uncertainty estimates

The fixed and relative standard deviation ( $s$ and $v$ ) derived from the ICES data base (extraction date: 11 January 2022) and used to estimate missing uncertainties are tabulated below for biota and sediment. The unit only applies to the fixed standard deviation; the relative standard deviation is unitless. The notes at the bottom of each table describe the approach taken when there were insufficient data in the ICES data base to derive the fixed and relative standard deviations.

Biota
Sediment

group	code	name	unit	fixed sd	relative sd
Metals	AS	Arsenic	$\mu$ g/kg	3.1333	0.0752
	CD	Cadmium	$\mu$ g/kg	0.5269	0.0702
	CR	Chromium	$\mu$ g/kg	3.0000	0.1456
	CO	Cobalt	$\mu$ g/kg	0.3000	0.1250
	CU	Copper	$\mu$ g/kg	2.0000	0.0763
	PB	Lead	$\mu$ g/kg	2.3333	0.1037
	HG	Mercury	$\mu$ g/kg	0.5410	0.0880
	NI	Nickel	$\mu$ g/kg	3.3333	0.1470
	SE	Selenium	$\mu$ g/kg	2.9848	0.0826
	AG	Silver	$\mu$ g/kg	1.6333	0.1500
	SN	Tin	$\mu$ g/kg	3.3333	0.2500
	ZN	Zinc	$\mu$ g/kg	50.0000	0.0740
Organotins	MBSN+	Monobutyl tin cation	$\mu$ g/kg	0.3000	0.2000
	MPSN+	Monophenyl tin cation	$\mu$ g/kg	0.3000	0.2000
	DBSN+	Dibutyl tin cation	$\mu$ g/kg	0.3000	0.2000
	DPSN+	Diphenyl tin cation	$\mu$ g/kg	0.3000	0.2000
	TBSN+	Tributyl tin cation	$\mu$ g/kg	0.3000	0.2000
	TPSN+	Triphenyl tin cation	$\mu$ g/kg	0.3000	0.2000
PAH parent compounds	NAP	Naphthalene	$\mu$ g/kg	0.1667	0.2420
	ACNLE	Acenaphthylene	$\mu$ g/kg	0.1017	0.2768
	ACNE	Acenaphthene	$\mu$ g/kg	0.0567	0.2530
	FLE	Fluorene	$\mu$ g/kg	0.0800	0.2100
	PA	Phenanthrene	$\mu$ g/kg	0.1321	0.1468
	ANT	Anthracene	$\mu$ g/kg	0.0667	0.2200
	DBT	Dibenzothiophene	$\mu$ g/kg	0.1000	0.2354
	FLU	Fluoranthene	$\mu$ g/kg	0.1667	0.1230
	PYR	Pyrene	$\mu$ g/kg	0.1667	0.1275
	BAA	Benzo[a]anthracene	$\mu$ g/kg	0.0933	0.1885
	CHR	Chrysene	$\mu$ g/kg	0.0829	0.1400
	BAP	Benzo[a]pyrene	$\mu$ g/kg	0.0533	0.2119
	BEP	Benzo[e]pyrene	$\mu$ g/kg	0.1667	0.1014
	BBKF	Benzo[b,k]fluoranthene	$\mu$ g/kg	0.1400	0.1359
	DBAHA	Dibenz[ah]anthracene	$\mu$ g/kg	0.0450	0.2306
	PER	Perylene	$\mu$ g/kg	0.1500	0.2225
	BGHIP	Benzo[g,h,i]perylene	$\mu$ g/kg	0.0567	0.2100
	ICDP	Indeno[123-cd]pyrene	$\mu$ g/kg	0.0633	0.2603
PAH alkylated compounds	NAPC1	C1 Naphthalenes	$\mu$ g/kg	0.3667	0.2188
	NAPC2	C2 Naphthalenes	$\mu$ g/kg	0.1667	0.1207
	NAPC3	C3 Naphthalenes	$\mu$ g/kg	0.1867	0.1345
	NAPC4	C4 Naphthalenes	$\mu$ g/kg	0.0567	0.1177
	PAC1	C1 Phenanthrenes	$\mu$ g/kg	0.1667	0.1826
	PAC2	C2 Phenanthrenes	$\mu$ g/kg	0.0667	0.1530
	PAC3	C3 Phenanthrenes	$\mu$ g/kg	0.1667	0.1826
	DBTC1	C1 Dibenzothiophene	$\mu$ g/kg	0.2500	0.1049
	DBTC2	C2 Dibenzothiophene	$\mu$ g/kg	0.3383	0.1073
	DBTC3	C3 Dibenzothiophenes	$\mu$ g/kg	0.4850	0.1071
PAH metabolites	NAP2OH	2-hydroxy naphthalene	ng/ml	0.1233	0.1750
	PA1OH	1-hydroxy phenanthrene	ng/ml	0.1233	0.1750
	PYR1OH	1-hydroxy pyrene	ng/ml	0.1233	0.1500
	PYR1OHEQ	1-hydroxy pyrene equivalent	$\mu$ g/ml	0.1233	0.1750
	BAP3OH	3-hydroxy benzo(a)pyrene	ng/ml	0.1233	0.2000
Polybrominated diphenyl ethers	BDE28		$\mu$ g/kg	0.0020	0.2825
	BDE47		$\mu$ g/kg	0.0035	0.1667
	BDE66		$\mu$ g/kg	0.0015	0.2990
	BDE85		$\mu$ g/kg	0.0018	0.2174
	BDE99		$\mu$ g/kg	0.0030	0.2308
	BD100		$\mu$ g/kg	0.0027	0.2032
	BD126		$\mu$ g/kg	0.0030	0.2308
	BD153		$\mu$ g/kg	0.0015	0.2500
	BD154		$\mu$ g/kg	0.0018	0.2670
	BD183		$\mu$ g/kg	0.0026	0.2655
	BD209		$\mu$ g/kg	0.0333	0.2556
	SBDE6	Sum of BDE 28, 47, 99, 100, 153, 154	$\mu$ g/kg	0.0105	0.1875
Organobromines (other)	HBCD		$\mu$ g/kg	0.0167	0.2500
	HBCDA	alpha-HBCD	$\mu$ g/kg	0.0022	0.2500
	HBCDB	beta-HBCD	$\mu$ g/kg	0.0433	0.2500
	HBCDG	gamma-HBCD	$\mu$ g/kg	0.0233	0.3000
	TBBPA	Tetrabromobiphenol-A	$\mu$ g/kg	0.0667	0.2500
Organofluorines	PFOA		$\mu$ g/kg	0.0750	0.1780
	PFNA		$\mu$ g/kg	0.0500	0.2500
	PFDA		$\mu$ g/kg	0.0433	0.2495
	PFUNDA		$\mu$ g/kg	0.0400	0.2416
	PFDOA		$\mu$ g/kg	0.0467	0.2785
	PFTRDA		$\mu$ g/kg	0.0700	0.2600
	PFTDA		$\mu$ g/kg	0.0700	0.3235
	PFBS		$\mu$ g/kg	0.0333	0.3400
	PFHXS		$\mu$ g/kg	0.0183	0.1298
	PFOS		$\mu$ g/kg	0.0667	0.1998
	PFOSA		$\mu$ g/kg	0.1717	0.1650
Polychlorinated biphenyls	CB28		$\mu$ g/kg	0.0300	0.1700
	CB52		$\mu$ g/kg	0.0333	0.1683
	CB101		$\mu$ g/kg	0.0333	0.1500
	CB105		$\mu$ g/kg	0.0054	0.1750
	CB118		$\mu$ g/kg	0.0333	0.1515
	CB126		$\mu$ g/kg	0.0000	0.1641
	CB138		$\mu$ g/kg	0.0333	0.1500
	CB153		$\mu$ g/kg	0.0333	0.1391
	CB156		$\mu$ g/kg	0.0033	0.1531
	CB169		$\mu$ g/kg	0.0001	0.1400
	CB180		$\mu$ g/kg	0.0333	0.1500
	SCB6	Sum of ICES 6 CBs	$\mu$ g/kg	0.2000	0.1280
	SCB7	Sum of ICES 7 CBs	$\mu$ g/kg	0.2333	0.1283
Dioxins	CDF2T		$\mu$ g/kg	0.0000	0.1497
	CDD1N		$\mu$ g/kg	0.0000	0.1500
	TCDD		$\mu$ g/kg	0.0000	0.1400
	TEQDFP	WHO-TEQ (DFP)	TEQ $\mu$ g/kg	0.0000	0.1375
Organochlorines (other)	DDEPP	DDE (p,p’)	$\mu$ g/kg	0.0167	0.1809
	DDTOP	DDT (o,p’)	$\mu$ g/kg	0.0067	0.2625
	DDTPP	DDT (p,p’)	$\mu$ g/kg	0.0133	0.2500
	TDEPP	TDE (p,p’)	$\mu$ g/kg	0.0067	0.1970
	HCB	Hexachlorobenzene	$\mu$ g/kg	0.0117	0.2135
	HCBD	Hexachlorobutadiene	$\mu$ g/kg	0.0226	0.1556
	HCEPX	Heptachlor epoxide	$\mu$ g/kg	0.0139	0.1650
	HCHA	alpha-HCH	$\mu$ g/kg	0.0035	0.2270
	HCHB	beta-HCH	$\mu$ g/kg	0.0067	0.2318
	HCHG	gamma-HCH	$\mu$ g/kg	0.0114	0.2731
	HCH	Sum of HCH A B G	$\mu$ g/kg	0.0133	0.2200
	MCCP	Medium chain chlorinated paraffin	$\mu$ g/kg	0.3333	0.1390
	SCCP	Short chain chlorinated paraffin	$\mu$ g/kg	0.3333	0.1397
	ALD	Aldrin	$\mu$ g/kg	0.0050	0.2500
	DIELD	Dieldrin	$\mu$ g/kg	0.0036	0.2000
	END	Endrin	$\mu$ g/kg	0.0172	0.1339
	ISOD	Isodrin	$\mu$ g/kg	0.0333	0.1651
	OCDAN	Oxychlordane	$\mu$ g/kg	0.0010	0.1750
Biological effects (other)	ACHE		nmol/min/mg protein	0.0000	0.4000
	ALAD		ng/min/mg protein	0.0000	0.2000
	EROD		pmol/min/mg protein	0.5055	0.0544
	GST		nmol/min/mg protein	0.0000	0.2000

DBSN+, MBSN+, TPSN+, DPSN+ and MPSN+: $s$ and $v$ were imputed from TBSN+
PAC3: $s$ and $v$ were imputed from PAC1
PA1OH, BAP3OH: $s$ was imputed from PYR1OH (no limits of detection in the data base)
NAP2OH, PYR1OHEQ: $s$ and $v$ were imputed from PA1OH (no uncertainties or limits of detection in the data base)
BD126: $s$ and $v$ were imputed from BDE99
ACHE: $v$ was set to 0.4 (median value) and $s$ was set to 0 (no limits of detection)
GST: $v$ was set to 0.2 (median value) and $s$ was set to 0 (no limits of detection)
ALAD: $s$ and $v$ were set to 0 and 0.2 based on typical values for other biological effects (no uncertainties or limits of detection)
Scope for Growth (not tabulated above): this is assessed on the untransformed scale (not the logarithmic scale) and $s$ and $v$ were set to 0.1 and 0

group	code	name	unit	fixed sd	relative sd
Metals	AS	Arsenic	mg/kg	0.1000	0.1003
	CD	Cadmium	mg/kg	0.0050	0.1100
	CR	Chromium	mg/kg	0.2167	0.0900
	CU	Copper	mg/kg	0.1583	0.0905
	PB	Lead	mg/kg	0.2833	0.0905
	HG	Mercury	mg/kg	0.0022	0.1004
	NI	Nickel	mg/kg	0.1500	0.0842
	ZN	Zinc	mg/kg	0.2583	0.0848
Organotins	MBSN+	Monobutyl tin cation	$\mu$ g/kg	0.1167	0.2654
	MPSN+	Monophenyl tin cation	$\mu$ g/kg	0.1167	0.2654
	DBSN+	Dibutyl tin cation	$\mu$ g/kg	0.1167	0.2654
	DPSN+	Diphenyl tin cation	$\mu$ g/kg	0.1167	0.2654
	TBSN+	Tributyl tin cation	$\mu$ g/kg	0.1000	0.2400
	TPSN+	Triphenyl tin cation	$\mu$ g/kg	0.1000	0.2400
PAH parent compounds	NAP	Naphthalene	$\mu$ g/kg	0.4867	0.1405
	ACNLE	Acenaphthylene	$\mu$ g/kg	0.3333	0.2713
	ACNE	Acenaphthene	$\mu$ g/kg	0.4000	0.1862
	FLE	Fluorene	$\mu$ g/kg	0.4333	0.1879
	PA	Phenanthrene	$\mu$ g/kg	1.0000	0.1186
	ANT	Anthracene	$\mu$ g/kg	0.3333	0.1708
	DBT	Dibenzothiophene	$\mu$ g/kg	0.1667	0.1000
	FLU	Fluoranthene	$\mu$ g/kg	0.3333	0.0874
	PYR	Pyrene	$\mu$ g/kg	0.5000	0.0906
	BAA	Benzo[a]anthracene	$\mu$ g/kg	0.3333	0.1300
	CHR	Chrysene	$\mu$ g/kg	0.6667	0.1224
	BAP	Benzo[a]pyrene	$\mu$ g/kg	0.3333	0.1500
	BEP	Benzo[e]pyrene	$\mu$ g/kg	0.4667	0.0797
	BBKF	Benzo[b,k]fluoranthene	$\mu$ g/kg	0.6667	0.1500
	DBAHA	Dibenz[ah]anthracene	$\mu$ g/kg	0.3333	0.2533
	PER	Perylene	$\mu$ g/kg	0.1383	0.1000
	BGHIP	Benzo[g,h,i]perylene	$\mu$ g/kg	0.3333	0.1500
	ICDP	Indeno[123-cd]pyrene	$\mu$ g/kg	0.3333	0.1148
PAH alkylated compounds	NAPC1	C1 Naphthalenes	$\mu$ g/kg	0.4467	0.1036
	NAPC2	C2 Naphthalenes	$\mu$ g/kg	0.5200	0.0724
	NAPC3	C3 Naphthalenes	$\mu$ g/kg	0.0833	0.0899
	NAPC4	C4 Naphthalenes	$\mu$ g/kg	0.0333	0.1084
	PAC1	C1 Phenanthrenes	$\mu$ g/kg	0.3800	0.0666
	PAC2	C2 Phenanthrenes	$\mu$ g/kg	0.1117	0.0793
	PAC3	C3 Phenanthrenes	$\mu$ g/kg	0.3850	0.0833
	DBTC1	C1 Dibenzothiophene	$\mu$ g/kg	0.0667	0.0939
	DBTC2	C2 Dibenzothiophene	$\mu$ g/kg	0.1283	0.1283
	DBTC3	C3 Dibenzothiophenes	$\mu$ g/kg	0.0833	0.0910
Polybrominated diphenyl ethers	BDE28		$\mu$ g/kg	0.0067	0.2537
	BDE47		$\mu$ g/kg	0.0067	0.1500
	BDE66		$\mu$ g/kg	0.0100	0.1977
	BDE85		$\mu$ g/kg	0.0100	0.1929
	BDE99		$\mu$ g/kg	0.0067	0.1997
	BD100		$\mu$ g/kg	0.0083	0.1954
	BD153		$\mu$ g/kg	0.0067	0.2246
	BD154		$\mu$ g/kg	0.0067	0.2220
	BD183		$\mu$ g/kg	0.0083	0.3000
	BD209		$\mu$ g/kg	0.2700	0.2628
Organobromines (other)	HBCD		$\mu$ g/kg	0.0700	0.3212
	HBCDA	alpha-HBCD	$\mu$ g/kg	0.0233	0.3000
	HBCDB	beta-HBCD	$\mu$ g/kg	0.0233	0.3000
	HBCDG	gamma-HBCD	$\mu$ g/kg	0.0233	0.3296
Polychlorinated biphenyls	CB28		$\mu$ g/kg	0.0227	0.1691
	CB52		$\mu$ g/kg	0.0333	0.2259
	CB101		$\mu$ g/kg	0.0333	0.1519
	CB105		$\mu$ g/kg	0.0163	0.1801
	CB118		$\mu$ g/kg	0.0300	0.1650
	CB138		$\mu$ g/kg	0.0333	0.1659
	CB153		$\mu$ g/kg	0.0333	0.1439
	CB156		$\mu$ g/kg	0.0033	0.1741
	CB180		$\mu$ g/kg	0.0300	0.1741
Dioxins	CDF2T		$\mu$ g/kg	0.0001	0.2376
	CDD1N		$\mu$ g/kg	0.0001	0.2376
	TCDD		$\mu$ g/kg	0.0001	0.2376
	TEQDFP	WHO-TEQ (DFP)	TEQ $\mu$ g/kg	0.0000	0.2376
Organochlorines (other)	DDEPP	DDE (p,p’)	$\mu$ g/kg	0.0050	0.2600
	DDTOP	DDT (o,p’)	$\mu$ g/kg	0.0067	0.3000
	DDTPP	DDT (p,p’)	$\mu$ g/kg	0.0050	0.2600
	TDEPP	TDE (p,p’)	$\mu$ g/kg	0.0067	0.3000
	HCB	Hexachlorobenzene	$\mu$ g/kg	0.0067	0.3761
	HCBD	Hexachlorobutadiene	$\mu$ g/kg	0.0067	0.3761
	HCEPX	Heptachlor epoxide	$\mu$ g/kg	0.0067	0.3761
	HCHA	alpha-HCH	$\mu$ g/kg	0.0052	0.3000
	HCHB	beta-HCH	$\mu$ g/kg	0.0067	0.3823
	HCHG	gamma-HCH	$\mu$ g/kg	0.0050	0.3000
	ALD	Aldrin	$\mu$ g/kg	0.0067	0.3000
	DIELD	Dieldrin	$\mu$ g/kg	0.0128	0.1883
Normalisers	AL	Aluminium	%	0.0007	0.1256
	LI	Lithium	mg/kg	0.0333	0.1488
	CORG	Organic Carbon	%	0.0100	0.1000

MPSN+, DPSN+, TPSN+: $s$ and $v$ were imputed from MBSN+, DBSN+ and TBSN+ respectively
CB156: $v$ was imputed from CB180
CDF2T, CDD1N, TEQDFP: $v$ was imputed from TCDD
DDTPP: $s$ and $v$ were imputed from DDEPP
HCBD, HCEPX: $s$ and $v$ were imputed from HCB