COOLest scattering chart ever
This graph represents change in density of small particles in the water over time and depth. Red represents greater quantity (density) of 470nm ish particles in the water, and blue, not so much. As the glider moves off the coast one can observe some patches of high density of particles (creating cloudy water) which are likely caused by storms or eddies. The fact that the red patches are usually lower in the water is likely due to the fact that silt settles to the bottom. The first red patch, which probably got stirred up by a storm, goes all the way to the surface: there is less water for the particles to be displaced in, so the impact of a little disruption is more drastic in shallow water. In the second red patch, around the 21st, there is a similar disruption, but more water; the impact isn't as dramatic because of the depth. It could even be limited to the bottom by high salinity (especially if it was raining; surface water won't be very salty at all). There is a lower density patch between the two red patches, which could probably be accounted for by the glider leaving the area or a gap in the storm (it is a gap of several hours, very possible). In deep water, there is almost no change in particle density at all--such deep water is probably unaffected by storms in that way.