CSEMP assessment of CB180 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 | 120.56 | 122.06 | -57.28 | 114.56 | | | |
| linear | 2 | 120.62 | 123.53 | -56.31 | 112.62 | 1.933 | 1 | 0.1645 |
| smooth (df = 2) | 3 | 114.49 | 119.49 | -52.24 | 104.49 | 8.138 | 1 | 0.0043 |
| smooth (df = 3) | 4 | 114.44 | 122.44 | -51.22 | 102.44 | 2.042 | 1 | 0.1530 |
| smooth (df = 4) | 5 | 116.02 | 128.27 | -51.01 | 102.02 | 0.424 | 1 | 0.5147 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | -0.9164 | -1.2901 | -0.3737 | 0.2242 | -1.667 | 0.1214 |
| last 20 years | 2000 | 2017 | -0.9164 | -1.2901 | -0.3737 | 0.2242 | -1.667 | 0.1214 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.275 | 0.100 | -1.012 | 0.184 | -5.503 | 0.9999 |
| EAC | 0.275 | 12.000 | 3.775 | 0.184 | 20.517 | <0.0001 |
Raw data with supporting information
__sdmn_cb180_au.jpg "Raw data with supporting information for assessment of CB180 in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_cb180_da.jpg "Raw data with assessment of CB180 in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_cb180_as.jpg "Assessment plot for CB180 in sediment at outer (Firth of Clyde)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB180 in sediment at outer (Firth of Clyde)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB180 in sediment at outer (Firth of Clyde)")
Related pages
