Other samples were being taken at established pollution monitoring stations in Lower Manhattan and Brooklyn.
Seismic activity had been picked up by the US geological survey and monitoring stations in South Korea.
Some cities place their monitoring stations in vast green parks or traffic-free courtyards, hence the lower figures they report.
The WHO takes information from monitoring stations in more than 1,600 cities on every populated continent.
But data from monitoring stations in the two hemispheres suggests that the increase is not coming from the Arctic.
Monitoring stations in the U.S. and Mexico detected a massive detonation in the Port-au-Prince area in the range of 8.3.
The American Academy of Allergy, Asthma and Immunology supplied modern devices to all the monitoring stations in its affiliated network, the National Allergy Bureau.
It collected hourly readings from monitoring stations in each city — Handan has four — and used a scale known as the Air Quality Index.
My organization and its collaborators have recently set up virus monitoring stations in China, Laos, Madagascar, Malaysia and the Democratic Republic of Congo.
Data will not be complete for several weeks, but according to monitoring stations in Hawaii and Norway, levels were on course to grow slightly on record 2008 levels.
He reached his conclusion after a yearlong analysis of radioisotope data from monitoring stations in South Korea, Russia and Japan, as well as meteorological records.
