According to the documentation (providaded by IBGE), only the
categories from COD_PESO_VOLUME (code for weight or volume)
variable that encompass the table 7 are applicable, the others that
aren't are represented by the level ZERO associated to the the label
nao aplicavel. Occurs the same to the categorical variable
COD_UNIDADE_MEDIDA (code for measuring unit).
The COD_LOCAL_COMPRA (site of acquisition) appers in the file
'Descricoes dos registros POF 2008-2009.doc' (documentation provided
by IBGE) as having the level 88801 associated to the label
ignorado, but in the files 'Classificacoes POF 2008-2009.doc' and
'Cadastro de local de aquisicoes da POF 2008-2009.xls' appears the
same label associated to other level, 99902. In the file
'Descricoes dos registros POF 2008-2009.doc' the level ZERO is
associated to the label nao aplicavel.