COLUMN_NAME SAMPLE_TYPE UNITS LABEL FORMABBR VAR_TYPE RANGE_HIGH RANGE_LOW LEGAL_VALUES REFERENCE CHLA CHLA ug/L "Chlorophyll a concentration in water sample, ug/L" NUMERIC DATE_COL SITEINFO Date of primary site visit POINT CHARACTER T. Magee - 2011 NWCA Raw Data Dictionary Version 3-04-2013.xlsx PUBLICATION_DATE Date the dataset was published to the NARS site SAMPLE_TYPE Code identifying sample type SITE_ID SITEINFO Identification code for site POINT CHARACTER SITE_USE SITEINFO Result classifies each point in a way that indicates how a point can be used in analysis or not CHARACTER NWCA_DO_NOT_USE|NWCA_NOT_NEEDED|NWCA_NOT_PROBABILITY|NWCA_NOT_SAMPLED|NWCA_PROBABILITY|NWCA_REVISITS STATE SITEINFO State abbreviation CHARACTER UID Unique identification number for a site visit VISIT_NO SITEINFO Visit number within the year POINT CHARACTER T. Magee - 2011 NWCA Raw Data Dictionary Version 3-04-2013.xlsx