Disclaimer: This tool was developed by Tom Carlson Consulting LLC. It was created from the official distribution of the data model. Tom Carlson Consulting LLC makes neither claim nor warranty that this tool provides an accurate representation of the NIEM data model. For official and authoritative representations, please visit the official NIEM release website. Non-English text 
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A vertical bearing angle with respect to the horizontal plane from a reference point (Origin) to an object (i.e., instrument, detector, or item) or a nuclide. Its value is the angle subtended by a straight line, running from the center of the reference point to the center of the object or nuclide, and a projection of that line onto the horizontal plane. The angle range is from "-90.0" to "+90.0" degrees. A value of zero implies the center of the object or nuclide is at the same altitude or elevation as the reference point; positive values imply the object or nuclide is higher than the reference point; negative values imply the object or nuclide is lower than the reference point.
View UML for type: cbrn:Angle90Type