CSEMP assessment of CB28 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 | 91.26 | 94.86 | -42.63 | 85.26 | | | |
| linear | 2 | 91.58 | 99.58 | -41.79 | 83.58 | 1.681 | 1 | 0.1947 |
| smooth (df = 2) | 3 | 89.18 | 105.84 | -39.59 | 79.18 | 4.404 | 1 | 0.0358 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2017 | -2.190 | -3.222 | -1.0315 | 0.7166 | -1.440 | 0.2001 |
| last 20 years | 2001 | 2017 | -2.190 | -3.222 | -1.0315 | 0.7166 | -1.440 | 0.2001 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.0399 | 0.2200 | 1.707 | 0.363 | 4.700 | 0.0017 |
| EAC | 0.0399 | 1.7000 | 3.752 | 0.363 | 10.328 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
