*Not only are levels of Suspended Particulate Matter above permissible limits in Mumbai, but the worst pollutant after vehicular emissions has grown at an alarming rate. *Construction work among main causes; respiratory diseases are on the rise, say doctors Despite all the efforts to reign in pollution in the financial capital, data collected by a slew of mobile air quality monitoring vans across the city have some alarming news: The levels of Respirable Suspended Particulate Matter (RSPM), or dust, in Mumbai's air have continued to increase over the past three years. These mobile monitoring vans operated by the Brihanmumbai Municipal Corporation's Air Quality Monitoring and Research (AQMR) laboratory are stationed at traffic junctions at Worli, Andheri and Wadala. * In January 2008, Andheri touched 542 microgrammes per cubic metre (