CSEMP assessment of DDE (p,p') in biota at Conwy Sands (Conwy Bay)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 39.11 | 48.11 | -16.56 | 33.11 | | | |
| linear | 2 | 37.23 | 69.23 | -14.61 | 29.23 | 3.883 | 1 | 0.0488 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2012 | 2018 | -1.4435 | -0.0420 | 1.4015 | 0.5813 | 2.411 | 0.0949 |
| last 20 years | 2012 | 2018 | -1.4435 | -0.0420 | 1.4015 | 0.5813 | 2.411 | 0.0949 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.9589 | 0.1027 | -2.2340 | 0.4013 | -5.568 | 0.9943 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Pesticides data
Pesticides assessment
Related pages
