Variable data has been truncated after the 4th decimal space.

All ADCP measurements are 15 minutes prior to the recorded field 'measurement_date'.

The value substitution for missing data is the character string '9999'.

This is telemetered data which is a snapshot measurement of the conditions as reported every 2 hours.
There may be gaps in the datasets where time records are missing.


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For the quality control variables( _qc), the levels correspond to the following:

Salinity: 30.0 ppt to 36.7 ppt
Currents: 0 cm/sec to 225 cm/sec  
Water temperatures: 6.7 degrees C to 30.0 degrees C
Air temperature: 0 to 41 degrees C
 
Data which are within the accepted range limit = 1
Data which are below the accepted range limit = 2
Data which are above the accepted range limit =  3

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