CSEMP assessment of CB28 in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 101.16 | 102.66 | -47.58 | 95.16 | | | |
| linear | 2 | 101.65 | 104.56 | -46.82 | 93.65 | 1.510 | 1 | 0.2192 |
| smooth (df = 2) | 3 | 96.95 | 101.95 | -43.48 | 86.95 | 6.694 | 1 | 0.0097 |
| smooth (df = 3) | 4 | 97.93 | 105.93 | -42.96 | 85.93 | 1.028 | 1 | 0.3107 |
| smooth (df = 4) | 5 | 92.93 | 105.18 | -39.47 | 78.93 | 6.995 | 1 | 0.0082 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | -0.4460 | -0.9449 | -0.4989 | 0.3880 | -1.286 | 0.2228 |
| last 20 years | 2000 | 2017 | -0.4460 | -0.9449 | -0.4989 | 0.3880 | -1.286 | 0.2228 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.3887 | 0.2200 | -0.5692 | 0.3223 | -1.766 | 0.9486 |
| EAC | 0.3887 | 1.7000 | 1.4756 | 0.3223 | 4.579 | 0.0003 |
Raw data with supporting information
__sdmn_cb28_au.jpg "Raw data with supporting information for assessment of CB28 in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_cb28_da.jpg "Raw data with assessment of CB28 in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_cb28_as.jpg "Assessment plot for CB28 in sediment at outer (Firth of Clyde)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB28 in sediment at outer (Firth of Clyde)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB28 in sediment at outer (Firth of Clyde)")
Related pages
