CSEMP assessment of BDE99 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 58.05 | 62.55 | -26.02 | 52.05 | | | |
| linear | 2 | 38.49 | 49.15 | -15.24 | 30.49 | 21.560 | 1 | <0.0001 |
| smooth (df = 2) | 3 | 40.48 | 65.48 | -15.24 | 30.48 | 0.005 | 1 | 0.9417 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2017 | -0.838 | -3.222 | -2.3837 | 0.2405 | -9.911 | 0.0002 |
| last 20 years | 2005 | 2017 | -0.838 | -3.222 | -2.3837 | 0.2405 | -9.911 | 0.0002 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.0399 | 0.0120 | -1.201 | 0.156 | -7.717 | 0.9997 |
| FEQG | 0.0399 | 1.0000 | 3.222 | 0.156 | 20.707 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
