The sampling campaign took place on an unspecified date, as the provided data does not include a specific sampling date. According to the context data, there were no samples collected, as indicated by a count of zero. Consequently, there were no monitoring wells involved in this particular dataset.

Since there were no samples collected, there are no results to report regarding parameters falling outside of expected ranges. Without any data on measurements, it is impossible to identify any stations, parameters, or measured values that deviate from the expected standards.

In the absence of collected data, it is important to note that deviations from drinking-water standards are common in untreated groundwater and should be interpreted within the appropriate context. Typically, only parameters that show a clear deterioration compared to previous sampling rounds would be of concern. For example, low oxygen concentrations are typical in deep groundwater due to oxygen consumption during long subsurface travel, whereas low oxygen in shallow wells may indicate contamination and warrant further investigation. However, without data, such interpretations cannot be made for this dataset.