CSEMP assessment of BD100 in biota at Flamborough
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 88.03 | 90.60 | -41.02 | 82.03 | | | |
| linear | 2 | 81.83 | 87.16 | -36.91 | 73.83 | 8.203 | 1 | 0.0042 |
| smooth (df = 2) | 3 | 83.28 | 93.28 | -36.64 | 73.28 | 0.547 | 1 | 0.4597 |
| smooth (df = 3) | 4 | 79.43 | 97.43 | -33.72 | 67.43 | 5.847 | 1 | 0.0156 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2017 | 1.2779 | -0.2727 | -1.5506 | 0.4292 | -3.612 | 0.0069 |
| last 20 years | 2003 | 2017 | 1.2779 | -0.2727 | -1.5506 | 0.4292 | -3.612 | 0.0069 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.7613 | 0.0120 | -4.150 | 0.268 | -15.482 | 1.0000 |
| FEQG | 0.7613 | 1.0000 | 0.273 | 0.268 | 1.017 | 0.1694 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
