CSEMP assessment of BDE47 in biota at Camarthen Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 37.27 | 39.84 | -15.63 | 31.27 | | | |
| linear | 2 | 32.70 | 38.03 | -12.35 | 24.70 | 6.571 | 1 | 0.0104 |
| smooth (df = 2) | 3 | 32.57 | 42.57 | -11.29 | 22.57 | 2.121 | 1 | 0.1453 |
| smooth (df = 3) | 4 | 34.51 | 52.51 | -11.26 | 22.51 | 0.064 | 1 | 0.7997 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2016 | 1.4372 | 0.1393 | -1.2979 | 0.4258 | -3.048 | 0.0159 |
| last 20 years | 2003 | 2016 | 1.4372 | 0.1393 | -1.2979 | 0.4258 | -3.048 | 0.0159 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.15 | 0.01 | -4.562 | 0.261 | -17.478 | 1.0000 |
| FEQG | 1.15 | 44.00 | 3.645 | 0.261 | 13.964 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
