Fig.2 Location of serial station data (POD)collected by Japan Fisheries Agency from 1963 to 1993.
Fig.3 Time change of the number of observations in POD.
The quality control software named "POD-QC", runs on Microsoft Windows. The results of quality check are displayed graphically in various ways, and so erroneous data are easily found and corrected even by non-experts, such as part-time worker in any PFES. The POD of each PFES are re-arranged in time-serial dataset, and then are divided into cruise data by identifying several days interval between stations. Header information and ship-track are displayed for each cruise, and erroneous information such as extraordinary ship speed is indicated with red colored tracks (Fig.5). The error data can be corrected in data view/edit window directly. This procedure is very efficient to find errors in header information such as position, date, time and so on. Then, temperature, salinity and density profiles can be shown for selected observation point(s).
