CSEMP assessment of indeno[123-cd]pyrene in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 57.90 | 59.53 | -25.95 | 51.90 | |||
linear | 2 | 53.20 | 56.40 | -22.60 | 45.20 | 6.698 | 1 | 0.0097 |
smooth (df = 2) | 3 | 48.39 | 53.94 | -19.19 | 38.39 | 6.814 | 1 | 0.0090 |
smooth (df = 3) | 4 | 48.38 | 57.38 | -18.19 | 36.38 | 2.006 | 1 | 0.1567 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2016 | 4.615 | 4.048 | -0.5664 | 0.3360 | -1.686 | 0.1200 |
last 20 years | 1999 | 2016 | 4.615 | 4.048 | -0.5664 | 0.3360 | -1.686 | 0.1200 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 57.29 | 103.00 | 0.5866 | 0.3361 | 1.745 | 0.0544 |
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 : MinchMalin_TheMinchNorth_se02 (North Minch)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se02 (North Minch)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020