The data for the dust documentation sheet are listed in the table dust_month2.
        The table is provided as SAS and SPSS-file.
        In the last update from September 2010 some Finnish data of variables SB05, SB06 and
        SB07 were corrected at the request of the Finnish centre.

        A documentation of all variables is given as an additional Excel-file

        An annotated CRF is also included (variable names were added in red and coding in  blue
        colour onto the original questionnaire).

        The update was necessary, because we have got corrections from the Finnish centre.