"He didn't think he would be over the limit and, to be fair, if he had one microgramme less in his reading he would not have been prosecuted," said Mr Prew.

A man has been put off the road for two years, but if the breath sample he provided had been one microgramme of alcohol higher, he would have received a three-year disqualification. Matija Malovic ...

"During the car-free event, the PM2.5 level was 335 microgramme per cubic metre (cum) in Dwarka. This was much lower than the levels observed in the heavy traffic stretch between Dhaula Kuan and ...

They found a rise in the concentration of nitrogen dioxide (NO2) of just one microgramme per cubic metre above the daily average is sufficient to increase the average number of accidents each day ...