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 |
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for in sediment
- Accessment criteria for 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