Standard Name Table for dataset description of PIV measurements

A first alpha version of a standard name table intended for usage with PIV measurement results stored in HDF5 files. The meta data concept is adopted from the cf-conventions. A "standard_name" and a "units" attribute must be assigned as an attribute of the corresponding HDF5 dataset in order to make it identifieable by others (user or machines). The table lists all possible standard names with their SI-units. Please note that this version is intended for testing purposes, and it is planned to release future versions accompanied by complementary publications.