CSEMP assessment of chrysene in sediment at Tancred (Forth)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 34.65 | 40.65 | -14.32 | 28.65 | |||
linear | 2 | 36.65 | 52.65 | -14.32 | 28.65 | 0.000 | 1 | 0.9991 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | 4.272 | 4.272 | 0.00063 | 0.07769 | 0.008 | 0.9939 |
last 20 years | 2005 | 2018 | 4.272 | 4.272 | 0.00063 | 0.07769 | 0.008 | 0.9939 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 71.7 | 20.0 | -1.2767 | 0.1641 | -7.779 | 0.9993 |
ERL | 71.7 | 384.0 | 1.6782 | 0.1641 | 10.225 | 0.0003 |
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_LowerForthEstuary_se02, Tancred (Forth)
Determinand : Chrysene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_LowerForthEstuary_se02, Tancred (Forth)
Determinand : Chrysene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020