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so that the red/blue colouring goes over top of the black daily average.
One more addition to the State of Ocean / Environment file products is a special "externally-derived" sensor. The MAT, CSV and ODV file have a "levelled-pressure" sensor in addition to the regular scalar pressure sensor. This purpose of this version of the pressure is to remove the variation between deployments so that a continuous time series is available. The algorithm to derive it is as follows: for each deployment remove the mean from the time series (i.e. zero mean), then concatenate the time series back together and add a fixed offset, calculated from the site depth (from the metadata) converted to pressure using the GSW toolbox. The effect is that the jumps in value at each deployment are removed and the time series is much more suitable for calculating tides, storm surge, etc. Users can do this calculation themselves with the deployment data that exists in the headers of the ODV and CSV files or the metadata structure in the MAT file.
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