CAN figures are not unsubstantiated

We've been taken to task by a reader for our piece yesterday for which we stand accused of "repeating this unsubstantiated and unproven statement that only a small number of old diesel-engined vehicles are causing a relatively high amount of the roadside pollution".

The piece was based on calculations by the organisation Clean Air Network (CAN) on the basis of the recent release by the Environmental Protection Department of Hong Kong's 2010 Air Pollutant Emission Inventory.

via Business feed http://www.scmp.com/business/article/1076503/can-figures-are-not-unsubstantiated