Sentence examples for quarterly average concentrations from inspiring English sources

We compiled quarterly average concentrations of the 1-hr daily maximum O3 and 24-hr average NO2, SO2, and CO from hourly measurements of gases.

We compiled quarterly average concentrations of the 24-hr average PM10 and PM2.5 from monthly averages of every sixth day PM10 measurements and daily, every third day, and 2-week average PM2.5 measurements (Blanchard and Tanenbaum 2005).

At Santa Monica, the maximum quarterly average concentration of lead was 0.10 µg/m, two-thirds of the NAAQS limit of 0.15 µg/m.

Quarterly, average O3 concentrations were low and showed little variability from October through March [see Supplemental Material, Figure S6 (online at http://www.ehponline.org/members/2008/10497/suppl.pdf) for sample quarters].

For quarters 2 and 3 and years 1983 through 2000, 47.5% and 13.2% of the quarterly, average, 1-hr maximum O3 concentrations exceeded the California and federal daily 1-hr standard, respectively (California EPA 2008; U.S. EPA 2000).

During 1980 2000, 25.7% of the gridded, quarterly, average 1-hr maximum O3 concentrations exceeded the level of California's daily 1-hr standard (90 ppb), and 8.2% exceeded the federal daily 1-hr standard of 0.12 ppm.

The quarterly average of 31 IPOs that has prevailed over the past two years is less than two-thirds the quarterly average of 53 IPOs produced during 2013 and 2014.

Last year the quarterly average was 26 for a total of 103.

Inventory is now 6,851 listings, just shy of the 10-year quarterly average of 7,094, Mr. Miller said.

But annual average concentrations of NO2 are higher than those for PM2.5.

What went up? Quarterly average daily and monthly active users.