Thank you Vikrant,When I was measured solar irradiance using solar power meter and I got 950 w/m2 to 1250w/m2 from 11.00 AM to 2.30PM in the month of February. but one reviewer review my paper and replied me as 1500 W /m2 is not encountered in India or anywhere else terrestrially And ask me to change. the maximum irradiance as 1000W/m2.that's why I have the doubt .