diff --git a/Repositories/Maps/css_map.pl b/Repositories/Maps/css_map.pl
index 664c343..21f8984 100755
--- a/Repositories/Maps/css_map.pl
+++ b/Repositories/Maps/css_map.pl
@@ -204,6 +204,10 @@
 print '<div style="position:absolute; left:1px; bottom:1px; font-size:small;">';
 print 'Map generated in ' . ( $finish_time - $start_time ) . ' ms</div>' . "\n";
 
+open RESULTS, ">>/tmp/css_results_$num_entries.txt" or die "Argh!\n";
+print RESULTS ( $finish_time - $start_time ) . "\n";
+close RESULTS;
+
 sub round
 {
 	my ($n) = shift;