CSEMP assessment of naphthalene in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 99.36 | 101.61 | -46.68 | 93.36 | |||
linear | 2 | 93.11 | 97.68 | -42.56 | 85.11 | 8.254 | 1 | 0.0041 |
smooth (df = 2) | 3 | 95.08 | 103.41 | -42.54 | 85.08 | 0.034 | 1 | 0.8533 |
smooth (df = 3) | 4 | 90.78 | 105.18 | -39.39 | 78.78 | 6.299 | 1 | 0.0121 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | 4.842 | 3.534 | -1.3077 | 0.3883 | -3.367 | 0.0083 |
last 20 years | 2005 | 2018 | 4.842 | 3.534 | -1.3077 | 0.3883 | -3.367 | 0.0083 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 34.27 | 8.00 | -1.4547 | 0.2134 | -6.817 | 1.0000 |
ERL | 34.27 | 160.00 | 1.5410 | 0.2134 | 7.222 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
PAH (parent) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(parent) in sediment
- Accessment criteria for pah_(parent) in sediment
Media : Sediment (< 63 micron fraction)
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Naphthalene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Naphthalene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020