CSEMP assessment of BDE47 in biota at Flamborough
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 86.51 | 89.08 | -40.26 | 80.51 | | | |
| linear | 2 | 77.49 | 82.83 | -34.75 | 69.49 | 11.020 | 1 | 0.0009 |
| smooth (df = 2) | 3 | 79.49 | 89.49 | -34.74 | 69.49 | 0.005 | 1 | 0.9449 |
| smooth (df = 3) | 4 | 73.69 | 91.69 | -30.84 | 61.69 | 7.801 | 1 | 0.0052 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2017 | 3.0439 | 1.2954 | -1.7485 | 0.3911 | -4.471 | 0.0021 |
| last 20 years | 2003 | 2017 | 3.0439 | 1.2954 | -1.7485 | 0.3911 | -4.471 | 0.0021 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 3.65 | 0.01 | -5.718 | 0.243 | -23.558 | 1.0000 |
| FEQG | 3.65 | 44.00 | 2.489 | 0.243 | 10.254 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
