Index: trunk/www/dch/download.php
===================================================================
--- trunk/www/dch/download.php	(revision 19943)
+++ trunk/www/dch/download.php	(revision 19944)
@@ -67,6 +67,6 @@
 
 $rmemptyrows=array(
-      "no"    => "all data",
-      "yes"   => "remove rows with empty columns",
+      "no"      => "all data",
+      "yes"     => "remove rows with empty columns",
       );
 
@@ -131,5 +131,5 @@
     $dch=$_POST["dch"];
 else
-    $dch="novalue";
+    $dch="yes";
 
 if (!empty($_POST["dust"]))
@@ -174,5 +174,5 @@
     $factorcut=$_POST["factorcut"];
 else
-    $factorcut="novalue";
+    $factorcut="0.3";
 
 if (!empty($_POST["table"]))
@@ -184,5 +184,5 @@
     $rmemptyrow=$_POST["rmemptyrow"];
 else
-    $rmemptyrow="no";
+    $rmemptyrow="novalue";
 
 if (!empty($_POST["th"]))
@@ -483,4 +483,8 @@
 
     echo "<select name='rmemptyrows' size='1'>\n";
+    if ($rmemptyrow == "novalue")
+        printf("<option value='novalue' selected>Empty Rows (data w/o zd/th info lack corr. fluxes)</option>\n");
+    else
+        printf("<option value='novalue'>Empty Rows (data w/o zd/th info lack corr. fluxes)</option>\n");
     foreach ($rmemptyrows as $key => $name)
     {
@@ -491,5 +495,5 @@
     }
     echo "</select>\n <br>\n";
-    printf("Custom conversion factor to flux: <input name='crabflux' type='text' size='4' maxlength='4' value='%s'>[10^-11 erg/s/cm2] <br>\n", $crabflux);
+    printf("Custom conversion factor to flux: <input name='crabflux' type='text' size='4' maxlength='4' value='%s'>[10^-11 ph/s/cm2] <br>\n", $crabflux);
 }
 
@@ -533,5 +537,12 @@
     echo "</ul></li>\n";
     echo "<li>Not for all data dust measurements are available.</li>\n";
-    echo "<li>Be aware that if you use a custom conversion factor to flux that you have to make sure that it is consistent with the analysis you choose.</li>\n";
+    echo "<li>Empty columns: Be aware that no corrected rates and fluxes can be calculated if the zenith distance and/or threshold are missing.</li>\n";
+    echo "<li>Conversion factors:<br>\n";
+    echo "<ul>\n";
+    echo "<li>Be aware that the conversion factors to flux are for a slope of -2.63. If your source has a different spectrum, ";
+    echo "the conversion factor has to be adapted because of a changing energy threshold.</li>\n";
+    echo "<li>For the conversion factors the Crab spectrum from the PL of the HESS publication in 2006 has been used.</li>\n";
+    echo "<li>If you use a custom conversion factor to flux, make sure that it is consistent with the analysis you choose.</li>\n";
+    echo "</ul></li>\n";
     echo "</ul>";
 }