Heat wave continued to sweep several parts of the country. <br/>In Gujarat, four pilgrims died due to sun stroke in Bhavnagar district. <br/>In Rajasthan, Sriganganagar was the hottest place as it sizzled at a high of 47.8 degrees. <br/>In Punjab and Haryana, Hisar was the hottest place at 47 degrees. AIR correspondent reports that in the national capital, the mercury touched 43.9 degrees during the day yesterday.<br/>