An interactive plot displaying Standardized Precipitation Index (SPI) for 12-month time window ending in May has been made available on my Research Highlights page. The 12-month time window beginning in June and ending in May of the following year was chosen to represent water year over India. The precipitation data set used in this analysis was obtained from India Meteorological Department, and is available at 1 degree by 1 degree grids. The analysis period is from 1901 to 2003.