CSEMP assessment of benzo[g,h,i]perylene in sediment at Skelmorlie (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 61.13 | 62.93 | -27.56 | 55.13 | |||
linear | 2 | 60.62 | 64.17 | -26.31 | 52.62 | 2.509 | 1 | 0.1132 |
smooth (df = 2) | 3 | 62.54 | 68.79 | -26.27 | 52.54 | 0.076 | 1 | 0.7835 |
smooth (df = 3) | 4 | 63.05 | 73.33 | -25.52 | 51.05 | 1.494 | 1 | 0.2216 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2013 | 5.905 | 5.307 | -0.5984 | 0.3635 | -1.646 | 0.1280 |
last 20 years | 2000 | 2013 | 5.905 | 5.307 | -0.5984 | 0.3635 | -1.646 | 0.1280 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 201.65 | 80.00 | -0.9245 | 0.2197 | -4.207 | 0.9993 |
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 : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_FirthCInnerCumbraes_se02, Skelmorlie (Clyde)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020