The core <i>Timeseries </i>class contains an ordered set of point data. This data may be annotated with metadata about each particular data point (<i>PointMetadata</i>). It may also be annotated with metadata about the Timeseries as a whole (<i>TimeseriesMetadata</i>). There are several specializations of <i>Timeseries </i>in this specification to accommodate different encodings (interleaved and domain-range) and different result types (measurement and categorical). The <i>Timeseries </i>(or it's specializations) is the result of a <i>TimeseriesObservation</i>.