<xsl:param name="what" select="'unspecified'"/>
<xsl:param name="i" select="count(*/irspy:probe[@ok='1'])"/>
<xsl:variable name="date"
<xsl:param name="what" select="'unspecified'"/>
<xsl:param name="i" select="count(*/irspy:probe[@ok='1'])"/>
<xsl:variable name="date"