The sample file contains data set as well as sample level information. The interval file contains basic wt pct gravel, sand, silt, clay and statistics if available. The wt pct file contains weight percentages by phi range. In each file, headers describe column contents. Latitudes and longitudes may be entered in whole degrees or in decimal degrees.
Negative numbers indicate West longitudes or South latitudes.
Water depths are in whole meters and both minimum and maximum must be entered if you are searching on water depth. If you are searching on more than one set of criteria, please make sure that they are not mutually exclusive. For example, a ship that did not cross a particular area or did not collect samples for the specified institution.