Surface water temperatures were normal, except for in the southern and eastern Baltic, where the temperature was higher than normal. In the Arkona and Bornholm Basins, phosphate- and silicate concentrations in the surface water remained high. The surface water streaming out of the Baltic led to high values in the Sound as well. Oxygen concentrations below 2 ml/l were observed in the bottom water of the Arkona Basin and at depths exceeding 70 to 80 metres in other parts of the Baltic. Hydrogen sulphide was found below 80 metres in the Bornholm Basin and western Gotland Basin, and from 150 metres in the eastern Gotland Basin.