Meteor.publish("dailyMeasuresBySensor", (sensorId, dayStart, dayEnd) => {
    check(sensorId, String);
    check(dayStart, String);
    check(dayEnd, String);
    return ReadingsDailyAggregates.find({
        sensorId,
        day: {
            $gte: dayStart,
            $lte: dayEnd
        }
    })
});

@@ -43,16 +43,24 @@
 ensorId,
+ source,
  dayStar
@@ -96,32 +96,59 @@
 sorId, String);%0A
+    check(source, String);%0A
     check(daySta
@@ -247,16 +247,32 @@
 nsorId,%0A
+        source,%0A
         

Change publication of sensor-daily-aggregates to include source.