1. A computer-implemented method of analyzing through one-pass of unstructured time stamped data of a physical process, said method comprising: analyzing, using one or more data processors, a distribution of time-stamped unstructured data to identify a plurality of potential hierarchical structures for the unstructured data; performing, using the one or more data processors, a hierarchical analysis of the potential hierarchical structures to determine an optimal frequency and a data sufficiency metric for the potential hierarchical structures, selecting, using the one or more data processors, one of the potential hierarchical structures as a selected hierarchical structure based on the data sufficiency metrics; structuring, using the one or more data processors, the unstructured data according to the selected hierarchical structure and the optimal frequency associated with the selected hierarchical structure; and wherein said structuring of the unstructured data is performed via a single pass though the unstructured data; and performing, using the one or more data processors, the identified statistical analysis of the physical process using the structured data.