diff --git a/MAC/Tools/Rubidium/plotrubidium b/MAC/Tools/Rubidium/plotrubidium
index 8d5e8d373860fdf14de8f54fe82992b355c105ff..8aee9741af4752c026463e10adaa2c1748d139ef 100755
--- a/MAC/Tools/Rubidium/plotrubidium
+++ b/MAC/Tools/Rubidium/plotrubidium
@@ -5,11 +5,9 @@
 #
 
 if [ "$1" != "" ]; then
-   cp /var/log/ntpstats/rubidium_log.$1 /localhome/data/rubidium_log
-   
+   export now=$1
 else 
-   now="`date +%Y%m%d`"
-   cp /var/log/ntpstats/rubidium_log.$now /localhome/data/rubidium_log
+   export now="`date +%Y%m%d`"
    echo "Usage: plotrubidium yyyymmdd"
    sleep 1
    
@@ -25,9 +23,10 @@ set xlabel "date-time (UT)"
 set timefmt "%Y-%m-%dT%H:%M:%S"
 set xdata time
 set format x "%d %b-%H:%M"
-plot "/localhome/data/rubidium_log" using 1:5 every 20 notitle; 
-
+plot '/var/log/ntpstats/rubidium_log.'.`echo $now` using 1:5 every 20 notitle;
+ 
 pause 300
 reread
 EOF
 
+