"A doctor providing medical care to haze-affected patients in the North has called for an adjustment to the pollution safety standard.Dr Chaicharn Pothirat, chief of pulmonary, critical care and allergies at Chiang Mai University's faculty of medicine, said the current maximum safety level of 120 microgrammes per cubic meter per day for particles less than 10 microns is far higher than that set by the World Health Organisation (WHO).
In 2005, the WHO set the maximum safety figure at 50 ug per cu/m per day, but it has not been adopted in Thailand."
Link to the current readings from 2 stations in Chiang Mai
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