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 | 32.07 | 34.64 | -13.03 | 26.07 | |||
linear | 2 | 31.43 | 36.77 | -11.72 | 23.43 | 2.636 | 1 | 0.1045 |
smooth (df = 2) | 3 | 33.22 | 43.22 | -11.61 | 23.22 | 0.210 | 1 | 0.6470 |
smooth (df = 3) | 4 | 34.10 | 52.10 | -11.05 | 22.10 | 1.127 | 1 | 0.2884 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | -0.4192 | 0.1881 | 0.6073 | 0.3517 | 1.727 | 0.1225 |
last 20 years | 2005 | 2018 | -0.4192 | 0.1881 | 0.6073 | 0.3517 | 1.727 | 0.1225 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
ERL | 1.21 | 190.00 | 5.059 | 0.242 | 20.884 | <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_se02 (Fladen Ground)
Determinand : Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Dibenzothiophene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020