Association of mean temperatures during grain filling with mean grain yield of the CSISA-HT-EM trials across South Asia (Locations included are: Indore, Jabalpur, Karnal, Ludhiana, New Delhi, Ugar, Varanasi in India, Dinajpur and Jessore in Bangladesh, Bhairahawa in Nepal and Faisalabad in Pakistan), ME1 (Karnal, Ludhiana, New Delhi in India and Faisalabad in Pakistan) and ME5 (Indore, Jabalpur, Ugar, and Varanasi in India, Dinajpur and Jessore in Bangladesh, Bhairahawa in Nepal) from 2009 to 2014.