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Formats
hyd files are a unique binary format, readable by custom software only.
Searches on hyd files will be accompanied by a calibration filefile (except for FileDownloadService requests). This file is a text file, comma delimited with one descriptive header row. It is named following the usual standard and ending with '-hydrophoneCalibration.txt'. The dateFrom / dateTo is taken from the calibration date range of the first sensitivity bin attribute. If a search extends over multiple calibrations, multiple files will be produced. A currently applicable calibration will produce a file named with a dateTo that is midnight tomorrow. Here is an example of the first few lines of a hydrophone calibration text file:
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