A specific type of data sensing device used to measure environmental parameters. The USGS parameter code indicating the parameter and units being sensed. The code used to identify the method used to determine a parameter value. The per-parameter preferred order to display the sensor types The unique per-parameter identifying name of the sensor The description of the sensor The name identifying the manufacturer of the sensor. The identification of the model of the sensor. The user login identifier of the person or process that created a record. The date and time that data record was first inserted. The user login identifier of the person that last modified the record. The date and time that the data record was last modified.