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A sectional chart is a two-sided chart created from a Lambert Conformal Conic Projection [1] with two defined standard parallels. The scale is 1:500,000, with a contour interval of 500 feet. The size of each sectional is designed to be "arm's width" when completely unfolded.
The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...
The primary responsibility of Chicago Center is sequencing and separation of over-flights, arrivals, and departures in order to provide safe, orderly, and expeditious flow of aircraft. Chicago Center covers approximately 91,000 square miles (240,000 km 2 ) of the Midwestern United States , including parts of Illinois , Indiana , Michigan ...
Canadian wildfires are once again taking a toll on the continental U.S., this time in the Midwest, where air quality alerts have been issued across the region. Chicago's air quality ranks among ...
Below is a list of 526 cities sorted by their annual mean concentration of PM2.5 (μg/m 3) in 2022. [1] [2] By default the least polluted cities which have fewest particulates in the air come first.
A year after federal investigators outlined how Chicago funnels industrial polluters into Black and Latino neighborhoods, Mayor Brandon Johnson vowed Monday to overhaul zoning, planning and land ...
Millard Airport covers an area of 165 acres (67 ha) which contains one asphalt-paved runway (12/30) measuring 3,801 x 75 ft (1,159 × 23 m). For the 12-month period ending September 20, 2021, the airport had 24,000 aircraft operations, an average of 66 per day: 94% general aviation, 6% air taxi and <1% military. There was at the time 125 ...
Hay Springs Municipal Airport: Omaha: 3NO: North Omaha Airport: South Sioux City: 7K8: Martin Field: Utica: 0J9 Flying V Airport: Other military airports: Omaha: OFF OFF KOFF Offutt Air Force Base: 1,018 Notable private-use airports: Greeley: NE46 Greeley Municipal Airport: Mullen: 84NE Hooker County Airport: Weeping Water: NE69 EPG Browns ...