In February the eruption continued to decline but seismic activity was still significant, with earthquakes no greater than magnitude M3, some earthquakes were recorded at Tungnafellsjökul glacier, Askja and Herðubreið. The rate of subsidence of the caldera was slower at about 5 cm per day and levels of toxic gasses in inhabited areas stayed within safety limits for consistent periods. On 27 February the eruption ended after 6 months of continuous activity. Nevertheless, air pollution continued, and the area north of Bárðarbunga, including volcanoes Askja and Herðubreið, still remained closed to visitors.