TOAR shows present-day global ozone distribution and trends relevant to health; public database
Green Car Congress
FEBRUARY 6, 2018
Even so, during 2010-2014, people in parts of California, Arizona, Colorado, Texas, the Midwest and the Middle Atlantic still experienced more than 15 days a year in which ozone levels exceeded the US health-based air quality standard of 70 parts per billion (ppb) averaged over eight hours. Source: University of Leicester. Owen Cooper.
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