VVP (Velocity Volume Processing) Provides an estimate of the wind profile up to a certain height HWind (Horizontal Wind) Shows wind flow at a specific altitude. PPI (Plan Position Indicator) Gives a representation of the cloud echoes in a horizontal plane. SRI (Surface Rainfall Intensity) An estimate of rain intensity associated with different echoes. ` EHT (Echo Height Top) Gives a representation of the height to which the top of the clouds extend.