Maybe this can be of some help when studying clientraw files:
XREF (coss reference) of all fields in the 4 clientraw***.txt files:
http://www.weerstation-leuven.be/weather2/index.php?p=93-5&lang=en#
Field by field display of the 4 clientraw files:
http://www.weerstation-leuven.be/weather2/index.php?p=93-6&lang=en
Wim