Chapter 3 ______________________________________________________ Functional Description
VAISALA_______________________________________________________________________ 27
Message Formats
Observation Messages
Observation messages are fixed, and always contain all observations and
calculation outputs, regardless if individual sensors are present or not.
Observation values and results derived from missing sensors are
presented by one or more slash '/' characters in place of the value.
CSV
CSV message consists of header and tag/value pairs separated by
semicolons. The actual message does not contain linefeeds; the
description is split into two lines for readability.
(S:<StationName>;D:<YYMMDD>;T:<hhmmss>;
<ObsTag1>:ObsValue1>; … <ObsTagN:ObsValueN>)
where
<StationName> = Name of the observation site
<YYMMDD> = Message date UTC; for example, 101126
<hhmmss> = Message time UTC; for example, 085300
<ObsTag1> = Name for observation value
<ObsValue1:> = Observation value
; = Separator character between fields
: = Separator character between tag and value
Example header:
S:Testfield1;D:101126;T:055300
Example tag/value pair with trailing separator:
TAAVG1M:-0.3;
Tags for observation values are listed in section Observation Values on
page 22.
Missing observation values are replaced with one or more slash '/'
characters.
Example of a full CSV Message is shown on page 289.
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