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diff --git a/docs/reference/drift_parameters_focus.md b/docs/reference/drift_parameters_focus.md new file mode 100644 index 0000000..c83841e --- /dev/null +++ b/docs/reference/drift_parameters_focus.md @@ -0,0 +1,67 @@ +# Regression parameters for the Rautmann drift data + +The parameters were extracted from Appendix B to the FOCUS surface water +guidance using the R code given in the file +`data_generation/drift_parameters_focus.R` installed with this package. +The appendix itself is not included in the package, as its licence is +not clear. + +## Usage + +``` r +drift_parameters_focus +``` + +## Format + +A [tibble::tibble](https://tibble.tidyverse.org/reference/tibble.html). + +## Details + +For the hinge distance, `Inf` was substituted for the cases where no +hinge distance is given in the data, in this way parameters C and D are +never used for any distance if A and B are used for the case that the +distance is smaller than the hinge distance. + +## References + +FOCUS (2014) Generic guidance for Surface Water Scenarios (version 1.4). +FOrum for the Co-ordination of pesticde fate models and their USe. +<http://esdac.jrc.ec.europa.eu/public_path/projects_data/focus/sw/docs/Generic%20FOCUS_SWS_vc1.4.pdf> + +FOCUS (2001) FOCUS Surface Water Scenarios in the EU Evaluation Process +under 91/414/EEC. Report of the FOCUS Working Group on Surface Water +Scenarios, EC Document Reference SANCO/4802/2001-rev.2. 245, Appendix B. +<https://esdac.jrc.ec.europa.eu/public_path/projects_data/focus/sw/docs/FOCUS_SWS_APPENDIX_B.doc> + +Rautmann, D., Streloke, M and Winkler, R (2001) New basic drift values +in the authorization procedure for plant protection products Mitt. Biol. +Bundesanst. Land- Forstwirtsch. 383, 133-141 + +## See also + +[drift_percentages_rautmann](https://pkgdown.jrwb.de/pfm/reference/drift_percentages_rautmann.md), +[PEC_sw_drift](https://pkgdown.jrwb.de/pfm/reference/PEC_sw_drift.md) + +## Examples + +``` r +drift_parameters_focus +#> # A tibble: 49 × 8 +#> crop_group n_apps percentile A B C D hinge +#> <chr> <int> <int> <dbl> <dbl> <dbl> <dbl> <dbl> +#> 1 arable 1 90 2.76 -0.978 NA NA Inf +#> 2 arable 2 82 2.44 -1.01 NA NA Inf +#> 3 arable 3 77 2.02 -0.996 NA NA Inf +#> 4 arable 4 74 1.86 -0.986 NA NA Inf +#> 5 arable 5 72 1.79 -0.994 NA NA Inf +#> 6 arable 6 70 1.63 -0.986 NA NA Inf +#> 7 arable 7 69 1.58 -0.981 NA NA Inf +#> 8 arable 8 67 1.51 -0.983 NA NA Inf +#> 9 hops 1 90 58.2 -1.00 8655. -2.84 15.3 +#> 10 hops 2 82 66.2 -1.20 5555. -2.82 15.3 +#> # ℹ 39 more rows +unique(drift_parameters_focus$crop_group) +#> [1] "arable" "hops" "vines, late" "vines, early" "fruit, late" +#> [6] "fruit, early" "aerial" +``` |