diff --git a/cydiapomonella/templates/cydiapomonella/index.html b/cydiapomonella/templates/cydiapomonella/index.html
index 2cd2f0ea3a734b37d3a03ab8edf6d591043b134e..2dcc57bb9f2ad5ca43b7c3dba814c5f0b054fc2a 100644
--- a/cydiapomonella/templates/cydiapomonella/index.html
+++ b/cydiapomonella/templates/cydiapomonella/index.html
@@ -61,12 +61,35 @@
     var dateYesterday   =   getAdjustDate(dateToday,1); 
 
     var strEndDate      =   JSON.stringify(dateToday).substring(1,11);   
+    var CON_idSpecial   =   {
+                                    "Helgøy"    :   "536"
+                                ,   "Skiftun"   :   "537"
+                            }
 
+    /* Page onload function */
     $(function(){
+        /* Calendar will not accept future dates including today */
         document.getElementById('idTxtDateInput').setAttribute("max", JSON.stringify(dateYesterday).substring(1,11));
         $('#idTxtDateInput').removeClass('hasDatepicker');
     });
 
+    /* Function for check whether the choosed weather station is within special category (e.g. devis) */
+    function isSpecialWeatherStation(paramStationId)
+    {
+        var result = false;
+        $.each( CON_idSpecial, function( key, value ) {
+            if (paramStationId              === value)
+            {
+                result                      =   true;
+                return false; // exit the each loop
+            }
+        });
+        return result;
+    }
+
+
+
+
     /* Function works on date picker onClose event */
     function funDtPickerHeatSum()
     {
@@ -92,10 +115,7 @@
             var startDate               =   new Date($('#idTxtDateInput').val());
 
 
-            if(
-                varWeatherId === '536' ||
-                varWeatherId === '537'
-                ) 
+            if(isSpecialWeatherStation(varWeatherId)) 
             {
                 strStartDate            =   JSON.stringify(getAdjustDate(startDate, 2 )).substring(1,11); 
                 jsonParamUrlData        =   getWeatherDataUrlParam(varWeatherId, strStartDate, strEndDate, varElementMeasurementTypes, varLogInIntervalHourly, CONST_TIMEZONE);
@@ -161,10 +181,7 @@
             var dateStartDate               =   getAdjustDate(dateToday,radioDaysValue); 
             var strStartDate                =   JSON.stringify(dateStartDate).substring(1,11); 
 
-            if(
-                varWeatherId === '536' ||
-                varWeatherId === '537'
-                ) 
+            if(isSpecialWeatherStation(varWeatherId)) 
             {
                 var dateStartDate02         =   getAdjustDate(dateToday, (parseInt(radioDaysValue) + 1)); 
                     strStartDate            =   JSON.stringify(dateStartDate02).substring(1,11);       
@@ -188,10 +205,7 @@
 
         var jsonParamUrlDataHourly = '';
 
-        if(
-            varWeatherId === '536' ||
-            varWeatherId === '537'
-            ) 
+        if(isSpecialWeatherStation(varWeatherId)) 
         {
             jsonParamUrlDataHourly          =   {
                                                     logInterval                 :   paramLogInInterval,