HGW: Arsenic, Average total content (surface)
Description
The mean is the median (synonym: 50. percentile, central value). It is the value above or below which 50% of all cases of a data group are located. The calculation is carried out on outlier-adjusted data collectives. The total content is determined from the aqua regia extract (according to DIN ISO 11466 (1997)). The concentration is given in mg/kg. The BBodSchV (1999) does not set precautionary values for arsenic. According to LABO (2003) a sample count of >=20 is required for the calculation of background values. However, the map also shows groups with a sample count >= 10. This information is then only informal and not representative. Further information on definitions, horizon grouping and statistical evaluation: (https://mapserver.lgb-rlp.de/php_hgw_bod/meta/background values_hints.pdf)
Resources
| Name |
Format |
Description |
Link |
|
21 |
|
https://www.geoportal.rlp.de/mapbender/php/mod_exportIso19139.php?url=https%3A%2F%2Fwww.geoportal.rlp.de%2Fmapbender%2Fphp%2Fmod_dataISOMetadata.php%3FoutputFormat%3Diso19139%26id%3D185a79ca-f12b-5a28-e399-95b94e8d6302 |