CSEMP assessment of CB180 in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 43.89 | 47.49 | -18.94 | 37.89 | | | |
| linear | 2 | 41.71 | 49.71 | -16.85 | 33.71 | 4.178 | 1 | 0.0410 |
| smooth (df = 2) | 3 | 43.65 | 60.32 | -16.82 | 33.65 | 0.060 | 1 | 0.8064 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2013 | -2.767 | -3.668 | -0.9009 | 0.3939 | -2.287 | 0.0622 |
| last 20 years | 2005 | 2013 | -2.767 | -3.668 | -0.9009 | 0.3939 | -2.287 | 0.0622 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.026 | 0.100 | 1.365 | 0.248 | 5.493 | 0.0008 |
| EAC | 0.026 | 12.000 | 6.152 | 0.248 | 24.761 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
