Summary
Sea surface temperatures and nutrients levels were mostly normal for the season in all areas. In the Kattegat the oxygen deficit of this year is over and the concentrations in the bottom water were normal for the season. In the Arkona Bassin the oxygen situation in the deep water is again normal and a degree of saturation of 70% were recorded. An inflow had reached station BY4 in the Bornholm Bassin where oxygen concentrations at bottom exceeded 2ml/l. In the rest of the Baltic the oxygen situation is still very bad. Hydrogen sulphide were detected from 80 metres in the Bornholm Deep (BY5) and from 100 to 125 metres in the rest of the Baltic. Oxygen concentrations below 2ml/l occurred deeper than 60 to 80 metres in the rest of the Baltic Proper.