Handbook of best practices

Precision
The closeness of agreement between independent measurements obtained under stipulated
conditions of repeatability, generally expressed as a standard deviation (or standard
uncertainty) of measurement results (Taylor and Kuyatt, 1994). Used as a measure of the
stability of an instrument/sensor and its capability of producing the same measurement over
and over again for the same input signal.
Primary Node
An underwater unit that receives high-voltage DC power and multi Gbps communication
links from a Cable Shore Station and provides regulated low voltage power and Gbps
communication to a set of “Secondary Infrastructure” science instruments.
Privilege
The necessary authorization requirements that give a user a right to perform a particular
role. Designated sequence of operations or events, possibly taking up time, computation
power, or other resources, that produces some outcome; may be identified by the changes it
creates in the properties of one or more objects under its influence.
Process Definition
Source or executable format of a user-provided process to analyse, transform or otherwise
manipulate resources, such as data and data products, and to produce output in various
forms to the data distribution network, such as derived data products, detected events, etc. A
process definition can be scheduled and instantiated into a process.
Processing Level
A rating given to a data product indicating the level of sophistication of the data set. DATA
PRODUCT LEVEL. Data levels 1 through 4 as designated in the Product Type and
Processing Level Definitions document. Source: SPSO.
Raw Data
Data in their original packets, as received from the observer, unprocessed by EDOS.
Level 0. Raw instrument data at original resolution, time ordered, with duplicate packets
removed.
Level 1A. Reconstructed unprocessed instrument data at full resolution, time referenced,
and annotated with ancillary information, including radiometric and geometric calibration
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