Optical Products application schema. Earth Observation Metadata profile of Observations and Measurements is an OGC Standard. Copyright (c) 2013 Open Geospatial Consortium. To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ . eop root element for Optical Earth Observation Product description Extends EarthObservationResult for Optical products Must be expressed in percents Cloud cover assessment confidence. Expressed in percents. Indicator to know how the cloud cover percentage has been calculated Must be expressed in percents Snow cover assessment confidence. Expressed in percents. Indicator to know how the snow cover percentage has been calculated Cloud cover percentage has been calculated automatically Cloud cover percentage has been calculated manually