3 0 1 http://purl.dataone.org/odo/ECSO_00001660 surface pressure 'surface pressure' SubClassOf 'pressure_MeasurementType' 'surface pressure' SubClassOf 'Air Pressure' http://purl.dataone.org/odo/ECSO_00001650 sea level pressure 'sea level pressure' SubClassOf 'pressure_MeasurementType' 'sea level pressure' SubClassOf 'Air Pressure' http://purl.dataone.org/odo/ECSO_00001561 seawater chromophoric dissolved organic matter fluorescence 'seawater chromophoric dissolved organic matter fluorescence' SubClassOf 'seawater fluorescence' http://purl.dataone.org/odo/ECSO_00001561 seawater chromophoric dissolved organic matter fluorescence 'seawater chromophoric dissolved organic matter fluorescence' SubClassOf 'seawater fluorescence'