diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..be2a4a9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+ingress.rrd
diff --git a/add b/add
index 2c18498..a7ba04e 100755
--- a/add
+++ b/add
@@ -18,7 +18,7 @@
 
 . settings
 
-if [[ $REQUEST_METHOD != POST ]]
+if [[ $REQUEST_METHOD != POST ]] || [ ! -w "$rrdfile" ]
 then
 	cat <<-EOHead
 		Content-type: text/plain
diff --git a/add.html b/add.html
index 785d35f..d016699 100755
--- a/add.html
+++ b/add.html
@@ -80,8 +80,55 @@ Expires: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
 			<td style="background:black; color:white">Add data</td>
 		</tr>
 	</table>
-    	<form method="post" action="add">
-		<ul>
+EOHTML
+if ! [ -w "$rrdfile" ]
+then
+	rrdtool create ingress.rrd -s $((60*60))		\
+		DS:AP:GAUGE:$((2*24*60*60)):0:NaN		\
+		DS:Explorer:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Seer:GAUGE:$((48*60*60)):0:NaN		\
+		DS:XM:GAUGE:$((48*60*60)):0:NaN			\
+		DS:Hacker:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Builder:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Connector:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Mind_Controller:GAUGE:$((48*60*60)):0:NaN	\
+		DS:MU:GAUGE:$((48*60*60)):0:NaN			\
+		DS:Longest_Link:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Largest_Field:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Recharger:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Liberator:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Pioneer:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Purifier:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Neutralized:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Links_Destroyed:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Fields_Destroyed:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Walked:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Guardian:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Link_Maintained:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Link_Length_x_Days:GAUGE:$((48*60*60)):0:NaN	\
+		DS:Field_Held:GAUGE:$((48*60*60)):0:NaN		\
+		DS:Field_x_Days:GAUGE:$((48*60*60)):0:NaN	\
+		RRA:HWPREDICT:8760:8e-1:8e-1:$((24))		\
+		RRA:AVERAGE:99e-2:1:$((24*15))			\
+		RRA:MAX:99e-2:1:$((24*15))			\
+		RRA:AVERAGE:99e-2:4:$((24*180))			\
+		RRA:MAX:99e-2:4:$((24*180))			\
+		RRA:AVERAGE:99e-2:24:$(((4*365)+1))		\
+		RRA:MAX:99e-2:24:$(((4*365)+1))			\
+		RRA:AVERAGE:99e-2:$((24*30)):$(((32*365)+8))	\
+		RRA:MAX:99e-2:$((24*30)):$(((32*365)+8))	\
+	|| {
+		cat <<-EOHTML
+				<h1 style="color:red">Cannot create $rrdfile</h1>
+			    </body>
+			</html>
+			EOHTML
+		exit
+	}
+fi
+cat <<-EOHTML
+	<form method="post" action="add">
+	<ul>
 EOHTML
 
 for indice in ${!uinames[@]}
diff --git a/index b/index
index bd28bfa..7465807 100755
--- a/index
+++ b/index
@@ -17,6 +17,17 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 . settings
+if [ ! -w "$rrdfile" ]
+then
+	cat <<-EOHead
+		Content-type: text/plain
+		Last-Modified: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
+		Expires: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
+		refresh: 0,url=/cgi/$webuser/add.html
+
+	EOHead
+	exit
+fi
 
 if [ -n "$QUERY_STRING" ]
 then
@@ -148,12 +159,12 @@ then
 			<div>
 				<table style="width:840px">
 					<tr>
-						<td>Level</td>
-						<td>AP</td>
-						<td style="width:170px">Silver</td>
-						<td style="width:170px">Gold</td>
-						<td style="width:170px">Platinum</td>
-						<td style="width:170px">Black</td>
+						<th>Level</th>
+						<th>AP</th>
+						<th style="width:170px">Silver</th>
+						<th style="width:170px">Gold</th>
+						<th style="width:170px">Platinum</th>
+						<th style="width:170px">Black</th>
 					</tr>
 					<tr>
 						<td>&nbsp;</td>
@@ -242,23 +253,23 @@ then
 		EOHTML
 		for level in {1..16}
 		do
-			echo "<tr><td>$level</td>"
+			echo "<tr><th style=\"text-align:right\">$level</th>"
 			if (( last["AP"] >= lvl[level] ))
 			then
-				echo '<td style="background:lightgreen">'
+				echo '<td style="text-align:right; background:lightgreen">'
 				printf "%'li" ${lvl[level]}
 				echo '</td>'
 			else
 				readable=$(printf "%'li" ${lvl[level]})
-				echo '<td style="background:lightgrey">'"${readable// /&nbsp;}"
+				echo '<td  style="text-align:right; background:lightgrey">'"${readable// /&nbsp;}"
 				readable=$(printf "%'li" $(( last["AP"] - lvl[level] )))
 				echo "<br />(<span style=\"color:#FF2020;font-weight:bold\">${readable// /&nbsp;}</span>)</td>"
 			fi
 			if (( silvercount >= lvlsilver[level] ))
 			then
-				echo '<td style="background:lightgreen">'${lvlsilver[level]}'</td>'
+				echo '<td style="text-align:center; background:lightgreen">'${lvlsilver[level]}'</td>'
 			else
-				echo "<td style=\"background:lightgrey\">${lvlsilver[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( silvercount - lvlsilver[level] ))</span>)<br />"
+				echo "<td style=\"text-align:center; background:lightgrey\">${lvlsilver[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( silvercount - lvlsilver[level] ))</span>)<br />"
 				for id in {100..0}
 				do
 					[ -z "${upsilver[id]}" ] && continue
@@ -285,9 +296,9 @@ then
 			fi
 			if (( goldcount >= lvlgold[level] ))
 			then
-				echo '<td style="background:lightgreen">'${lvlgold[level]}'</td>'
+				echo '<td style="text-align:center; background:lightgreen">'${lvlgold[level]}'</td>'
 			else
-				echo "<td style=\"background:lightgrey\">${lvlgold[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( goldcount - lvlgold[level] ))</span>)<br />"
+				echo "<td style=\"text-align:center; background:lightgrey\">${lvlgold[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( goldcount - lvlgold[level] ))</span>)<br />"
 				for id in {100..0}
 				do
 					[ -z "${upgold[id]}" ] && continue
@@ -314,9 +325,9 @@ then
 			fi
 			if (( platinumcount >= lvlplatinum[level] ))
 			then
-				echo '<td style="background:lightgreen">'${lvlplatinum[level]}'</td>'
+				echo '<td style="text-align:center; background:lightgreen">'${lvlplatinum[level]}'</td>'
 			else
-				echo "<td style=\"background:lightgrey\">${lvlplatinum[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( platinumcount - lvlplatinum[level] ))</span>)<br />"
+				echo "<td style=\"text-align:center; background:lightgrey\">${lvlplatinum[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( platinumcount - lvlplatinum[level] ))</span>)<br />"
 				for id in {100..0}
 				do
 					[ -z "${upplatinum[id]}" ] && continue
@@ -343,9 +354,9 @@ then
 			fi
 			if (( blackcount >= lvlblack[level] ))
 			then
-				echo '<td style="background:lightgreen">'${lvlblack[level]}'</td>'
+				echo '<td style="text-align:center; background:lightgreen">'${lvlblack[level]}'</td>'
 			else
-				echo "<td style=\"background:lightgrey\">${lvlblack[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( blackcount - lvlblack[level] ))</span>)<br />"
+				echo "<td style=\"text-align:center; background:lightgrey\">${lvlblack[level]} (<span style=\"color:#FF2020;font-weight:bold\">$(( blackcount - lvlblack[level] ))</span>)<br />"
 				for id in {100..0}
 				do
 					[ -z "${upblack[id]}" ] && continue