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3483 Studies found for: during AND air

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Map Legend
Region Name Number of Studies
World [map] 3,483
North America 1,410
United States 1,224 [studies]
Alabama 166 [studies]
Alaska 26 [studies]
Arizona 145 [studies]
Arkansas 89 [studies]
California 382 [studies]
Colorado 210 [studies]
Connecticut 127 [studies]
Delaware 48 [studies]
District of Columbia 76 [studies]
Florida 290 [studies]
Georgia 204 [studies]
Hawaii 51 [studies]
Idaho 65 [studies]
Illinois 246 [studies]
Indiana 136 [studies]
Iowa 111 [studies]
Kansas 118 [studies]
Kentucky 129 [studies]
Louisiana 116 [studies]
Maine 57 [studies]
Maryland 232 [studies]
Massachusetts 243 [studies]
Michigan 194 [studies]
Minnesota 183 [studies]
Mississippi 62 [studies]
Missouri 242 [studies]
Montana 71 [studies]
Nebraska 117 [studies]
Nevada 78 [studies]
New Hampshire 61 [studies]
New Jersey 147 [studies]
New Mexico 64 [studies]
New York 285 [studies]
North Carolina 286 [studies]
North Dakota 51 [studies]
Ohio 290 [studies]
Oklahoma 146 [studies]
Oregon 164 [studies]
Pennsylvania 286 [studies]
Rhode Island 58 [studies]
South Carolina 199 [studies]
South Dakota 57 [studies]
Tennessee 150 [studies]
Texas 311 [studies]
Utah 115 [studies]
Vermont 70 [studies]
Virginia 178 [studies]
Washington 161 [studies]
West Virginia 76 [studies]
Wisconsin 136 [studies]
Wyoming 19 [studies]

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Studies with no locations are not included in the counts or on the map.

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