CSEMP assessment of BDE47 in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 49.66 | 54.16 | -21.83 | 43.66 | | | |
| linear | 2 | 51.59 | 62.25 | -21.79 | 43.59 | 0.070 | 1 | 0.7910 |
| smooth (df = 2) | 3 | 51.38 | 76.38 | -20.69 | 41.38 | 2.205 | 1 | 0.1376 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2008 | 2018 | -1.3481 | -1.1985 | 0.1496 | 0.5543 | 0.270 | 0.7981 |
| last 20 years | 2008 | 2018 | -1.3481 | -1.1985 | 0.1496 | 0.5543 | 0.270 | 0.7981 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.30 | 0.05 | -1.797 | 0.395 | -4.545 | 0.9969 |
| FEQG | 0.30 | 97.50 | 5.778 | 0.395 | 14.613 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
