CSEMP assessment of indeno[123-cd]pyrene in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 70.94 | 73.19 | -32.47 | 64.94 | |||
linear | 2 | 72.78 | 77.35 | -32.39 | 64.78 | 0.159 | 1 | 0.6898 |
smooth (df = 2) | 3 | 73.97 | 82.30 | -31.98 | 63.97 | 0.811 | 1 | 0.3678 |
smooth (df = 3) | 4 | 62.97 | 77.37 | -25.49 | 50.97 | 12.994 | 1 | 0.0003 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2018 | 5.096 | 4.965 | -0.13091 | 0.28810 | -0.454 | 0.6603 |
last 20 years | 2006 | 2018 | 5.096 | 4.965 | -0.13091 | 0.28810 | -0.454 | 0.6603 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 143.29 | 103.00 | -0.3301 | 0.1716 | -1.923 | 0.9567 |
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_Clyde_(middle)_seSF, middle (Firth of Clyde)
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_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020