CSEMP assessment of benzo[g,h,i]perylene in sediment at Sea of Hebrides
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 136.31 | 139.31 | -65.15 | 130.31 | |||
linear | 2 | 136.18 | 142.58 | -64.09 | 128.18 | 2.123 | 1 | 0.1451 |
smooth (df = 2) | 3 | 137.62 | 150.12 | -63.81 | 127.62 | 0.560 | 1 | 0.4542 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2016 | 3.301 | 3.811 | 0.5098 | 0.3175 | 1.606 | 0.1524 |
last 20 years | 2006 | 2016 | 3.301 | 3.811 | 0.5098 | 0.3175 | 1.606 | 0.1524 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 45.2 | 80.0 | 0.571 | 0.203 | 2.814 | 0.0130 |
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_SeaOfHebrides_se01 (Sea of Hebrides)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_SeaOfHebrides_se01 (Sea of Hebrides)
Determinand : Benzo[g,h,i]perylene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020