CSEMP assessment of CB153 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 | 95.18 | 97.18 | -44.59 | 89.18 | |||
linear | 2 | 93.11 | 97.11 | -42.56 | 85.11 | 4.066 | 1 | 0.0438 |
smooth (df = 2) | 3 | 95.02 | 102.17 | -42.51 | 85.02 | 0.091 | 1 | 0.7623 |
smooth (df = 3) | 4 | 96.14 | 108.14 | -42.07 | 84.14 | 0.884 | 1 | 0.3472 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2018 | -2.3199 | -0.8941 | 1.4258 | 0.6601 | 2.160 | 0.0561 |
last 20 years | 2006 | 2018 | -2.3199 | -0.8941 | 1.4258 | 0.6601 | 2.160 | 0.0561 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.41 | 0.19 | -0.767 | 0.377 | -2.032 | 0.9652 |
EAC | 0.41 | 40.00 | 4.583 | 0.377 | 12.145 | <0.0001 |
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 : CB153
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se01 (North Minch)
Determinand : CB153
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020