CSEMP assessment of dibenzothiophene in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 60.45 | 63.02 | -27.22 | 54.45 | |||
linear | 2 | 62.35 | 67.68 | -27.17 | 54.35 | 0.099 | 1 | 0.7526 |
smooth (df = 2) | 3 | 62.88 | 72.88 | -26.44 | 52.88 | 1.471 | 1 | 0.2252 |
smooth (df = 3) | 4 | 63.39 | 81.39 | -25.70 | 51.39 | 1.482 | 1 | 0.2234 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | -0.3436 | -0.2320 | 0.1116 | 0.3530 | 0.316 | 0.7600 |
last 20 years | 2005 | 2018 | -0.3436 | -0.2320 | 0.1116 | 0.3530 | 0.316 | 0.7600 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
ERL | 0.79 | 190.00 | 5.479 | 0.252 | 21.771 | <0.0001 |
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 : Fladen_FlaOpenSea_se04 (Fladen Ground)
Determinand : Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se04 (Fladen Ground)
Determinand : Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020