CSEMP assessment of benzo[g,h,i]perylene in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 69.25 | 71.50 | -31.62 | 63.25 | |||
linear | 2 | 71.02 | 75.59 | -31.51 | 63.02 | 0.225 | 1 | 0.6352 |
smooth (df = 2) | 3 | 72.79 | 81.12 | -31.40 | 62.79 | 0.231 | 1 | 0.6311 |
smooth (df = 3) | 4 | 74.55 | 88.95 | -31.28 | 62.55 | 0.239 | 1 | 0.6251 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 5.345 | 5.013 | -0.3320 | 0.6964 | -0.477 | 0.6449 |
last 20 years | 2000 | 2018 | 5.345 | 5.013 | -0.3320 | 0.6964 | -0.477 | 0.6449 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 150.41 | 80.00 | -0.6314 | 0.4118 | -1.533 | 0.9202 |
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 : Forth_Estuary_seSF (Forth Estuary)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020