Figure 3 . Distribution of hydrographic data and isopycnal watermass properties of ASW and CDW. Data density per 75 km data radius (top), Conservative Temperature (middle), and isopycnal pressure (bottom) are presented for ASW (left) and CDW (right). Areas with less than 10 data points within the 75 km radius are masked in gray. White contours in middle/bottom panels denote isopycnal spiciness/thickness (by 0.05 kg m-3/100 m intervals), respectively, and thick white contour is –0.15 kg m-3/300 m for each panel. SB (red) and isobaths with 1,000 m intervals (black) are also shown.