diff --git a/html/doalles.js b/html/doalles.js
index 7dd0664..c88171f 100644
--- a/html/doalles.js
+++ b/html/doalles.js
@@ -14,7 +14,7 @@ function maketable(str, arr)
         enter().
         append("tr");
     
-    var columns = ["sv", "best-tle", "iod", "aodc/e", "eph-age-m", "latest-disco", "time-disco", "sisa", "health", "tle-dist", "alma-dist", "delta-utc", "delta-gps", "sources", "db", "delta_hz_corr","prres", "elev", "last-seen-s"];    
+    var columns = ["sv", "best-tle", "iod", "eph-age-m", "latest-disco", "time-disco", "sisa", "health", "tle-dist", "alma-dist", "delta-utc", "delta-gps", "sources", "db", "delta_hz_corr","prres", "elev", "last-seen-s"];    
     
     // append the header row
     thead.append("tr")
@@ -163,28 +163,13 @@ function maketable(str, arr)
 
 var sats={};
 var lastseen=null;
-function update()
+
+function updateSats()
 {
-    var seconds = 2;
-    clearTimeout(repeat);
-    repeat=setTimeout(update, 1000.0*seconds);
-
-    if(lastseen != null)
-        d3.select("#freshness").html(lastseen.fromNow());
-
-    
-    d3.json("global.json", function(d) {
-        d3.select('#facts').html("Galileo-UTC offset: <b>"+d["utc-offset-ns"].toFixed(2)+"</b> ns, Galileo-GPS offset: <b>"+d["gps-offset-ns"].toFixed(2)+"</b> ns, GPS UTC offset: <b>"+d["gps-utc-offset-ns"].toFixed(2)+"</b>. "+d["leap-seconds"]+"</b> leap seconds");
-        lastseen = moment(1000*d["last-seen"]);
-        d3.select("#freshness").html(lastseen.fromNow());
-    });
-    
-    d3.json("svs.json", function(d) {
-        // put data in an array
-        sats=d;
-        var arr=[];
-        Object.keys(d).forEach(function(e) {
-            var o = d[e];
+    var arr=[];
+    setButtonSettings();
+        Object.keys(sats).forEach(function(e) {
+            var o = sats[e];
             o.sv=e;
             o.sources="";
             o.db="";
@@ -233,7 +218,26 @@ function update()
         var livearr=[], stalearr=[];
         for(n = 0 ; n < arr.length; n++)
         {
-//            if(arr[n]["gnssid"]) continue;
+            let wantIt = false;
+            if(d3.select("#GalE1").property("checked") && arr[n].gnssid==2 && arr[n].sigid == 1)
+                wantIt = true;
+            if(d3.select("#GalE5b").property("checked") && arr[n].gnssid==2 && arr[n].sigid == 5)
+                wantIt = true;
+            if(d3.select("#GPSL1CA").property("checked") && arr[n].gnssid==0 && arr[n].sigid == 0)
+                wantIt = true;
+            if(d3.select("#GPSL2C").property("checked") && arr[n].gnssid==0 && arr[n].sigid == 4)
+                wantIt = true;
+            if(d3.select("#BeiDouB1I").property("checked") && arr[n].gnssid==3 && arr[n].sigid == 0)
+                wantIt = true;
+            if(d3.select("#BeiDouB2I").property("checked") && arr[n].gnssid==3 && arr[n].sigid == 2)
+                wantIt = true;
+            if(d3.select("#GlonassL1").property("checked") && arr[n].gnssid==6 && arr[n].sigid == 0)
+                wantIt = true;
+            if(d3.select("#GlonassL2").property("checked") && arr[n].gnssid==6 && arr[n].sigid == 2)
+                wantIt = true;
+  
+            if(!wantIt)
+                continue;
             if(arr[n]["last-seen-s"] < 600)
                 livearr.push(arr[n]);
             else
@@ -242,10 +246,66 @@ function update()
 
         maketable("#svs", livearr);
         maketable("#svsstale", stalearr);
+
+}
+
+function update()
+{
+    var seconds = 20;
+    clearTimeout(repeat);
+    repeat=setTimeout(update, 1000.0*seconds);
+
+    if(lastseen != null)
+        d3.select("#freshness").html(lastseen.fromNow());
+
+    
+    d3.json("global.json", function(d) {
+        d3.select('#facts').html("Galileo-UTC offset: <b>"+d["utc-offset-ns"].toFixed(2)+"</b> ns, Galileo-GPS offset: <b>"+d["gps-offset-ns"].toFixed(2)+"</b> ns, GPS UTC offset: <b>"+d["gps-utc-offset-ns"].toFixed(2)+"</b>. "+d["leap-seconds"]+"</b> leap seconds");
+        lastseen = moment(1000*d["last-seen"]);
+        d3.select("#freshness").html(lastseen.fromNow());
+    });
+    
+    d3.json("svs.json", function(d) {
+        // put data in an array
+        sats=d;
+        updateSats();
         
     });
 }
 
+function getButtonSettings(name, def)
+{
+    let itemName = "want"+name;
+    let value = localStorage.getItem(itemName);
+    if(value == null) {
+        console.log("Defaulting "+itemName+" to "+def);
+        localStorage.setItem(itemName, def);
+    }
+//    else
+         // console.log("Found "+itemName+" set to '"+value+"'");
+    d3.select("#"+name).property("checked", localStorage.getItem(itemName)=="true");
+}
+
+function setButtonSetting(name)
+{
+//    console.log("Storing button state want"+name+" as "+d3.select("#"+name).property("checked"));
+    localStorage.setItem("want"+name, d3.select("#"+name).property("checked"));
+}
+
+var modes=["GalE1", "GalE5b", "GPSL1CA", "GPSL2C", "BeiDouB1I", "BeiDouB2I", "GlonassL1", "GlonassL2"];
+
+function setButtonSettings()
+{
+    modes.forEach(function(d) {
+        setButtonSetting(d);
+    });
+}
+
+getButtonSettings("GalE1", true);
+modes.forEach(function(d) {
+    getButtonSettings(d, false);
+});;
+
 repeat=update();
 
 
diff --git a/html/index.html b/html/index.html
index 4e80e15..f2bd98d 100644
--- a/html/index.html
+++ b/html/index.html
@@ -42,6 +42,18 @@ tr:nth-child(odd) {background: #FFF}
 </style>
 <body>
   Last update: <span id="freshness"></span>. More information about this Galileo/GPS/BeiDou/Glonass open source monitor can be found <a href="https://github.com/ahupowerdns/galmon/blob/master/README.md#galmon">here</a>. Live map <a href="geo">here!</a>. Contact <a href="https://ds9a.nl/">me</a> if you want access to the Grafana dashboard.<br/>
+  <center>
+    <hr/>
+  <input type="checkbox"  id="GalE1" onclick="updateSats();">  <label for="GalE1">Galileo E1</label> &nbsp;
+  <input type="checkbox"  id="GalE5b" onclick="updateSats();">  <label for="GalE5b">Galileo E5b</label> &nbsp;
+  <input type="checkbox"  id="BeiDouB1I" onclick="updateSats();">  <label for="BeiDouB1I">BeiDou B1I</label> &nbsp;
+  <input type="checkbox"  id="BeiDouB2I" onclick="updateSats();">  <label for="BeiDouB2I">BeiDou B2I</label> &nbsp;
+  <input type="checkbox"  id="GlonassL1" onclick="updateSats();">  <label for="GlonassL1">Glonass L1</label> &nbsp;
+  <input type="checkbox"  id="GlonassL2" onclick="updateSats();">  <label for="GlonassL2">Glonass L2</label> &nbsp;
+  <input type="checkbox"  id="GPSL1CA" onclick="updateSats();">  <label for="GPSL1CA">GPS L1C/A</label> &nbsp;
+  <input type="checkbox"  id="GPSL2C" onclick="updateSats();">  <label for="GPSL2C">GPS L2C</label>
+  </center>
+  <hr/>
   <table id="svs"></table>
   <hr>
   <p>
@@ -50,7 +62,7 @@ tr:nth-child(odd) {background: #FFF}
   Stale:<br/>
   <table id="svsstale"></table>
   <p>
-    This table shows live output from four Galileo/GPS/BeiDou/GLONASS receivers hosted in Nootdorp, The Netherlands and California, United States.
+    This table shows live output from four Galileo/GPS/BeiDou/GLONASS receivers hosted in Nootdorp, The Netherlands and California, United States, Tonga, Brazil, Singapore, Austria ans Uruguay.
     It is very much a work in progress, and will not be available at all times. Extremely rough code is on
     <a href="https://github.com/ahuPowerDNS/galmon">GitHub</a>.
 
diff --git a/navdump.cc b/navdump.cc
index a1bc58d..8cd13ce 100644
--- a/navdump.cc
+++ b/navdump.cc
@@ -57,6 +57,30 @@ double utcFromGPS(int wn, double tow)
   return (315964800 + wn * 7*86400 + tow - 18); 
 }
 
+static double utcFromGST(int wn, double tow)
+{
+  return (935280000.0 + wn * 7*86400 + tow - 18);  
+}
+
+// GALILEO ONLY!!
+template<typename T>
+void doOrbitDump(int gnss, int sv, int wn, const T& oldEph, const T& newEph, int time_start, int time_end)
+{
+  ofstream orbitcsv("orbit."+to_string(gnss)+"."+to_string(sv)+"."+to_string(oldEph.iodnav)+"-"+to_string(newEph.iodnav)+".csv");
+                
+  orbitcsv << "timestamp x y z oldx oldy oldz\n";
+  orbitcsv << fixed;
+  for(int t = time_start; t < time_end; t += 30) {
+    Point p, oldp;
+    getCoordinates(t, newEph, &p);
+    getCoordinates(t, oldEph, &oldp);
+    time_t posix = utcFromGST(wn, t);
+    orbitcsv << posix <<" "
+                           <<p.x<<" " <<p.y<<" "<<p.z<<" "
+                           <<oldp.x<<" " <<oldp.y<<" "<<oldp.z<<"\n";
+  }
+}
+
 
 int main(int argc, char** argv)
 try
@@ -68,10 +92,10 @@ try
   tles.parseFile("gps-ops.txt");
   tles.parseFile("beidou.txt");
 
-  bool skipGPS{false};
-  bool skipBeidou{false};
+  bool skipGPS{true};
+  bool skipBeidou{true};
   bool skipGalileo{false};
-  bool skipGlonass{false};
+  bool skipGlonass{true};
   
   ofstream almanac("almanac.txt");
   ofstream iodstream("iodstream.csv");
@@ -139,6 +163,27 @@ try
         }
 
         oldgm4s[nmm.gi().gnsssv()] = gm;
+        int sv = nmm.gi().gnsssv();
+        if(gmwtypes[{sv,1}].iodnav == gmwtypes[{sv,2}].iodnav &&
+           gmwtypes[{sv,2}].iodnav == gmwtypes[{sv,3}].iodnav &&
+           gmwtypes[{sv,3}].iodnav == gmwtypes[{sv,4}].iodnav) {
+          cout <<" have complete ephemeris at " << gm.iodnav;
+          if(!oldEph[sv].sqrtA)
+            oldEph[sv] = gm;
+          else if(oldEph[sv].iodnav != gm.iodnav) {
+            cout<<" disco! "<< oldEph[sv].iodnav << " - > "<<gm.iodnav <<", "<< (gm.getT0e() - oldEph[sv].getT0e())/3600.0 <<" hours-jump insta-age "<<ephAge(gm.tow, gm.getT0e())/3600.0<<" hours";
+            Point oldPoint, newPoint;
+            getCoordinates(gm.tow, oldEph[sv], &oldPoint);
+            getCoordinates(gm.tow, gm, &newPoint);
+            Vector jump(oldPoint, newPoint);
+            cout<<" distance "<< jump.length() << " ("<<jump.x<<", "<<jump.y <<", "<<jump.z<<")";
+            auto oldAtomic = oldEph[sv].getAtomicOffset(gm.tow);
+            auto newAtomic = gm.getAtomicOffset(gm.tow);
+            cout<<" clock-jump "<<oldAtomic.first - newAtomic.first<<" ns ";
+            doOrbitDump(2, sv, gm.wn, oldEph[sv], gm, gm.tow - 3*3600, gm.tow + 3*3600);
+            oldEph[sv]=gm;
+          }
+        }
       }
       if(wtype == 1) {
         cout << " iodnav " << gm.iodnav <<" t0e "<< gm.t0e*60 <<" " << ephAge(gm.t0e*60, gm.tow);