India, Oct. 30 -- An unsigned report from IIT Kanpur, shared by Delhi environment minister Manjinder Singh Sirsa on Tuesday, contends that the cloud seeding experiment in Delhi was somewhat successful, citing rainfall data and air quality improvements at three locations.

But as HT's report on the experiment, published on October 29, pointed out, the report cites rain data from Windy.com, a website that displays modelled estimates rather than measured rainfall. And the claim of cleaner air suffers from equally serious methodological failures.

The report stated: "The PM 2.5 was 221, 230, and 229 reported from Mayur Vihar, Carol (Karol) Bagh, and Burari, respectively, before cloud seeding, which got reduced to 207, 206, and 203, respective...