CSEMP assessment of benzo[a]anthracene in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 90.50 | 93.50 | -42.25 | 84.50 | |||
linear | 2 | 92.49 | 98.89 | -42.24 | 84.49 | 0.010 | 1 | 0.9184 |
smooth (df = 2) | 3 | 92.65 | 105.15 | -41.33 | 82.65 | 1.834 | 1 | 0.1757 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2016 | 2.0685 | 2.0386 | -0.02991 | 0.29196 | -0.102 | 0.9213 |
last 20 years | 2006 | 2016 | 2.0685 | 2.0386 | -0.02991 | 0.29196 | -0.102 | 0.9213 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 7.68 | 16.00 | 0.734 | 0.192 | 3.832 | 0.0032 |
ERL | 7.68 | 261.00 | 3.526 | 0.192 | 18.408 | <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 : MinchMalin_TheMinchNorth_se01 (North Minch)
Determinand : Benzo[a]anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se01 (North Minch)
Determinand : Benzo[a]anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020