CSEMP assessment of CB180 in sediment at Solway Firth
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 109.89 | 112.89 | -51.94 | 103.89 | | | |
| linear | 2 | 111.76 | 118.16 | -51.88 | 103.76 | 0.132 | 1 | 0.7160 |
| smooth (df = 2) | 3 | 107.50 | 120.00 | -48.75 | 97.50 | 6.255 | 1 | 0.0124 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2016 | -2.6478 | -2.9202 | -0.2724 | 0.7467 | -0.365 | 0.7261 |
| last 20 years | 2001 | 2016 | -2.6478 | -2.9202 | -0.2724 | 0.7467 | -0.365 | 0.7261 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.054 | 0.100 | 0.618 | 0.441 | 1.401 | 0.1019 |
| EAC | 0.054 | 12.000 | 5.405 | 0.441 | 12.265 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
