CSEMP assessment of indeno[123-cd]pyrene in sediment at Lough Foyle
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 136.55 | 138.55 | -65.28 | 130.55 | |||
linear | 2 | 135.12 | 139.12 | -63.56 | 127.12 | 3.434 | 1 | 0.0639 |
smooth (df = 2) | 3 | 121.03 | 128.18 | -55.52 | 111.03 | 16.086 | 1 | <0.0001 |
smooth (df = 3) | 4 | 122.38 | 134.38 | -55.19 | 110.38 | 0.653 | 1 | 0.4189 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 5.091 | 3.868 | -1.2232 | 0.3259 | -3.754 | 0.0045 |
last 20 years | 2000 | 2018 | 5.091 | 3.868 | -1.2232 | 0.3259 | -3.754 | 0.0045 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 47.84 | 103.00 | 0.7668 | 0.2366 | 3.241 | 0.0051 |
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 : MinchMalin_FoyleFaughanE_se01 (Lough Foyle)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_FoyleFaughanE_se01 (Lough Foyle)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020