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Pollution level

The level of total suspended particulate matter (TSPM) in the ambient air at a traffic intersection in Vallalar Nagar during the 24 hour period ending 6 a.m. on Thursday was 301 microgram/cubic metre. The permissible limit for TSPM is 200 microgram/cubic metre. According to data provided by the Tamil Nadu Pollution Control Board, the level of respirable suspended particulate matter (RSPM) during the same period in the location was 142 microgram/cubic metre. The permissible limit for RSPM is 100 microgram/cubic metre. The level of particulate matter was 148 microgram/cubic metre, which is on the higher side.

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Tamil Nadu

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