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Each value returned (representing the mean at longitude Lon ) is a mean of non-missing values in those grid points whose longitude coordinate is between Lon-2.5 and Lon+2.5 (2.5 is 5/2), in the belt between 30N and 30S.
date or list base_date ( fieldset )
Returns the base dates (including the time components) of the given fields. If the fieldset has only one field, a date is returned; otherwise a list of dates is returned.
fieldset bitmap (fieldset,number)
fieldset bitmap (fieldset,fieldset)
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Where f is the fieldset, p is the pressure and g the acceleration of gravity.
date or list valid_date ( fieldset )
Returns the valid dates (including the time components) of the given fields. If the fieldset has only one field, a date is returned; otherwise a list of dates is returned.
vector or list values ( fieldset )
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