CSEMP assessment of CB118 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 | 79.89 | 82.46 | -36.94 | 73.89 | |||
linear | 2 | 81.58 | 86.91 | -36.79 | 73.58 | 0.306 | 1 | 0.5800 |
smooth (df = 2) | 3 | 81.46 | 91.46 | -35.73 | 71.46 | 2.118 | 1 | 0.1456 |
smooth (df = 3) | 4 | 81.29 | 99.29 | -34.64 | 69.29 | 2.173 | 1 | 0.1404 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2018 | -2.2081 | -1.6603 | 0.5478 | 0.9576 | 0.572 | 0.5830 |
last 20 years | 2006 | 2018 | -2.2081 | -1.6603 | 0.5478 | 0.9576 | 0.572 | 0.5830 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.1901 | 0.1700 | -0.1116 | 0.5720 | -0.195 | 0.5749 |
EAC | 0.1901 | 0.6000 | 1.1495 | 0.5720 | 2.010 | 0.0397 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for chlorobiphenyls in sediment
- Accessment criteria for chlorobiphenyls in sediment
Media : Sediment (unsieved)
Station : MinchMalin_TheMinchNorth_se01 (North Minch)
Determinand : CB118
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se01 (North Minch)
Determinand : CB118
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020