Ozone, wind speed, temperature, and snow depth at (a) Jonah in 2008 and (b) Juel Spring, WY in 2011.
Maximum daily 8-hr average ozone mixing ratio (MDA8) in ppb (blue), smoothed wind speed in m/s (orange), temperature in °C (green), snow depth in inches (black dots) at Jonah, WY during winter 2008 and Juel Spring, WY during winter 2011. The National Ambient Air Quality of 75 ppb is shown by the blue horizontal line and the 0 °C temperature level is indicated by the horizontal green line. The measurements at Jonah were discontinued in 2011 and the instruments moved to the nearby Juel Spring site. See Figure 1 for location of sites.