/p>
<p>In the second form, flags is a list holding a single unnamed vector, and this
means to apply the actions to all the data entries. For example,
flags=list(c(1,3:9)) means to apply not just to salinity and temperature, but
to everything within the data slot.</p>
<p>If flags is NULL then it is set to <code>list(c(0,3,4,6,7,9))</code>, which means to
eliminate data that are considered bad (in some degree) or for which QC was
not performed. Following Section 3.2.1 of reference 1, the flag
meanings are as 