Scroll downward through this document to see time series plots, a progressive vector diagram, frequency histograms, and a KE spectrum from this current meter.
The axes of the PVDs are labelled in kilometers. Boxes mark the beginning of each month. The first PVD ends on 1 Feb 97 and the second PVD begins approximately 170 days later. The gap between the two plots was caused by a compass failure.
From here you can either move up one level or go back to the top window.