CSEMP assessment of indeno[123-cd]pyrene 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 | 126.96 | 129.21 | -60.48 | 120.96 | |||
linear | 2 | 124.75 | 129.32 | -58.38 | 116.75 | 4.207 | 1 | 0.0402 |
smooth (df = 2) | 3 | 125.05 | 133.38 | -57.53 | 115.05 | 1.699 | 1 | 0.1924 |
smooth (df = 3) | 4 | 125.13 | 139.53 | -56.57 | 113.13 | 1.917 | 1 | 0.1662 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 5.615 | 4.249 | -1.3656 | 0.6070 | -2.250 | 0.0510 |
last 20 years | 2000 | 2018 | 5.615 | 4.249 | -1.3656 | 0.6070 | -2.250 | 0.0510 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 70.04 | 103.00 | 0.3856 | 0.3939 | 0.979 | 0.1766 |
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 (unsieved)
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Indeno[123-cd]pyrene
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 : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020