What is the content or granularity of each data file?
Each data stream has a specific amount of detail in individual files; this is sometimes referred to as the “granularity” of the data file. For example, it is natural for a single hydrographic station to be in a single file, but may be more appropriate for a day’s worth of data to be in a single file for measurements collected while the ship is steaming, e.g. surface meteorology. The table below lists the granularity of each data stream.