value definition
urn:ogc:def:nil:OGC:1.0:instrument:HighReprSat A high representation saturation pixel occurred meaning a program computed a new pixel value at this location that was greater than native bit-type for the file (e.g., greater than 255 for an 8-bit file) 
urn:ogc:def:nil:OGC:1.0:inapplicable There is no value 
urn:ogc:def:nil:OGC:1.0:missing The correct value is not readily available to the sender of this data. Furthermore, a correct value may not exist 
urn:ogc:def:nil:OGC:1.0:template The value will be available later 
urn:ogc:def:nil:OGC:1.0:unknown The correct value is not known to, or not computable by, the sender of this data. However, the correct value probably exists 
urn:ogc:def:nil:OGC:1.0:withheld The value is not divulged 
urn:ogc:def:nil:OGC::AboveDetectionRange Value was above the detection range of the instrument used to estimate it 
urn:ogc:def:nil:OGC::BelowDetectionRange Value was below the detection range of the instrument used to estimate it