CSEMP assessment of fluoranthene in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 111.04 | 112.43 | -52.52 | 105.04 | |||
linear | 2 | 106.53 | 109.20 | -49.27 | 98.53 | 6.508 | 1 | 0.0107 |
smooth (df = 2) | 3 | 105.94 | 110.48 | -47.97 | 95.94 | 2.598 | 1 | 0.1070 |
smooth (df = 3) | 4 | 107.04 | 114.24 | -47.52 | 95.04 | 0.901 | 1 | 0.3426 |
smooth (df = 4) | 5 | 108.52 | 119.41 | -47.26 | 94.52 | 0.514 | 1 | 0.4732 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2018 | 5.751 | 4.802 | -0.9487 | 0.3364 | -2.820 | 0.0136 |
last 20 years | 1999 | 2018 | 5.751 | 4.802 | -0.9487 | 0.3364 | -2.820 | 0.0136 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 121.8 | 39.0 | -1.1389 | 0.1832 | -6.215 | 1.0000 |
ERL | 121.8 | 600.0 | 1.5945 | 0.1832 | 8.701 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
PAH (parent) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(parent) in sediment
- Accessment criteria for pah_(parent) in sediment
Media : Sediment (< 63 micron fraction)
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020