CSEMP assessment of pyrene 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 | 60.73 | 62.37 | -27.37 | 54.73 | |||
linear | 2 | 51.15 | 54.35 | -21.57 | 43.15 | 11.585 | 1 | 0.0007 |
smooth (df = 2) | 3 | 46.29 | 51.85 | -18.15 | 36.29 | 6.858 | 1 | 0.0088 |
smooth (df = 3) | 4 | 47.14 | 56.14 | -17.57 | 35.14 | 1.152 | 1 | 0.2832 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2016 | 3.310 | 2.476 | -0.8337 | 0.3176 | -2.625 | 0.0236 |
last 20 years | 1999 | 2016 | 3.310 | 2.476 | -0.8337 | 0.3176 | -2.625 | 0.0236 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 11.9 | 24.0 | 0.702 | 0.322 | 2.183 | 0.0258 |
ERL | 11.9 | 665.0 | 4.024 | 0.322 | 12.513 | <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_se02 (North Minch)
Determinand : Pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se02 (North Minch)
Determinand : Pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020