diff --git a/envisens/envisens_esp_fw/envisens_esp_fw.ino b/envisens/envisens_esp_fw/envisens_esp_fw.ino
index f253046..8d26b8a 100644
--- a/envisens/envisens_esp_fw/envisens_esp_fw.ino
+++ b/envisens/envisens_esp_fw/envisens_esp_fw.ino
@@ -22,7 +22,7 @@
 #define DIFF_TEMP 0.3 // sensor has only 0.5°C accuracy, triggering on less is ludicrous
 #define DIFF_HMID 2.5 // humidity doesn't change that much anyways
 #define DIFF_HEAT 0.2 // this one's actually quite active
-#define DIFF_AIRQ 5 
+#define DIFF_AIRQ 3 // this one hardly changes 
 
 float hmid = 0; // humidity
 float hmid_r = 0; // humidity
@@ -95,26 +95,34 @@ void reconnect() {
   }
 }
 
-bool checkBound(float newValue, float prevValue, float maxDiff) {
+bool checkVariation(float newValue, float prevValue, float maxDiff) {
   return !isnan(newValue) &&
          (newValue < prevValue - maxDiff || newValue > prevValue + maxDiff);
 }
 
+bool checkPlausibility(float newValue, float prevValue, float maxDiff) {
+  return (newValue < prevValue + (maxDiff * 10) || newValue > prevValue - (maxDiff * 10));
+}
+
 long lastMsg = 0;
 long lastSent = 0; 
 bool published = false;
 bool forcePublish = false;
 
 bool publish (String desc, char *topic, float val, float &val_r, int diff, bool force){
-    if (checkBound(val, val_r, 0.3) or force) {
-      val_r = val;
-      Serial.print("New " + desc + ": ");
-      Serial.println(String(val).c_str());
+  bool retval = false;
+  if (checkVariation(val, val_r, diff) or force) {
+    val_r = val;
+    Serial.print("New " + desc + ": ");
+    Serial.println(String(val).c_str());
+    if (checkPlausibility(val, val_r, diff) or force) {
       client.publish(topic, String(val).c_str(), true);
-      return true;
+      retval = true;
     } else {
-      return false;
+      Serial.println("** ERROR: Value out of bounds, not published **");
     }
+  }
+  return retval;
 }
 
 void loop() {