All functions |
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keeps only rows in data.frame with site code = "PNK" |
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adapts values of single results < detection limit. |
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calculates the load for each substance |
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calculates the load for each substance |
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estimates annual mean concentrations per site. |
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estimates annual mean concentrations per site. |
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calculate default statistics |
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removes substances, without detection from data.frame |
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function gives geometric mean |
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get detection limits for variables |
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Reads all lab values from ODBC-source |
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removes rows in data.frame with site code = "PNK" |
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lists substances without detection in any sample |
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removes rows in data.frame with SampleType ! = "Composite" |
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removes metal samples below detection limit (dl), |
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removes Variables, which have not |
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function gives the 25 percent quantile |
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function gives the 75 percent quantile |
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function gives the 95 percent quantile |
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removes lines with censor codes |
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removes measurements of Variables of a specific group |