CSEMP assessment of BD154 in biota at Flamborough
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 67.06 | 71.56 | -30.53 | 61.06 | | | |
| linear | 2 | 52.31 | 62.97 | -22.15 | 44.31 | 16.753 | 1 | <0.0001 |
| smooth (df = 2) | 3 | 53.97 | 78.97 | -21.98 | 43.97 | 0.341 | 1 | 0.5594 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2017 | 0.7140 | -1.4474 | -2.1614 | 0.2649 | -8.158 | 0.0004 |
| last 20 years | 2003 | 2017 | 0.7140 | -1.4474 | -2.1614 | 0.2649 | -8.158 | 0.0004 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.235 | 0.012 | -2.9755 | 0.1701 | -17.497 | 1.0000 |
| FEQG | 0.235 | 4.000 | 2.8337 | 0.1701 | 16.663 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
