CSEMP assessment of CB138 in sediment at Bann Estuary
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 84.40 | 90.40 | -39.20 | 78.40 | |||
linear | 2 | 86.40 | 102.40 | -39.20 | 78.40 | 0.000 | 1 | 0.9957 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2001 | 2018 | -2.9029 | -2.9091 | -0.0062 | 1.1697 | -0.005 | 0.9960 |
last 20 years | 2001 | 2018 | -2.9029 | -2.9091 | -0.0062 | 1.1697 | -0.005 | 0.9960 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.055 | 0.150 | 1.012 | 0.541 | 1.869 | 0.0675 |
EAC | 0.055 | 7.900 | 4.976 | 0.541 | 9.190 | 0.0004 |
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 (< 63 micron fraction)
Station : MinchMalin_BannEstuary_se01 (Bann Estuary)
Determinand : CB138
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_BannEstuary_se01 (Bann Estuary)
Determinand : CB138
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020