Ozone Measurements (image) University of Washington Share Print E-Mail Caption Top) The June 2015 measurement of ozone at the summit of Mount Bachelor (red dot) was significantly higher than any of the previous measurements. Middle) Differences from average ozone levels in June 2015, when "the blob" was creating unusual conditions along the West Coast. The star shows the location of Mount Bachelor Observatory. Bottom) Typical June ozone concentration across the US. Credit Dan Jaffe/University of Washington Bothell Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.