Data are shown as they were collected. The direction of the track can be deduced from the locations of the preceeding and following track in the frame on the left. Top image shows temperature (°C), second image salinity, third image density (σt). This representation of the region is covered by sections 8, 16, 24, 32, 40 and 44.
You can also select a movie of TS-diagrams along the track from left to right. The movie is an animated GIF file and will run at a preset display speed. If you want to start and stop the display to investigate individual TS-profiles you should donwload the file and view it in Quicktime.