$18 == "" {printf("%-30s %5d %#8.1f %#8.1f %#8.1f\n",$1,$2,$5/16.,$6/24.,$7/12.)}

$18 != "" {printf("%-30s %5d %#8.1f %#8.1f %#8.1f <a href=\"../stream_mail/%s\">data</a>\n",$1,$2,$5/16.,$6/24.,$7/12.,$18)}