Infowindow数据不显示从JSON在谷歌地图上

我使用了$getJSON方法来调用数据。标记显示在地图上完美，但当我点击标记它不显示值。所以，这是我的JSON数据，将在一个服务器，但我给的链接和JSON数据的一些代码随着我的HTML和JavaScript。

var map,infowindow;
    
    function initialize() {
   
        var mapProp = {
                center: new google.maps.LatLng(28.003389000000, -82.429500000000),
                zoom: 10,
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
        map = new google.maps.Map(document.getElementById("map"), mapProp);
        $.getJSON('js/file.json', function (json1) {
   
            $.each(json1.ResponseData, function (key, data) {
                var latLng = new google.maps.LatLng(data.CoordinateY, data.CoordinateX),
                    marker = new google.maps.Marker({
                        position: latLng,
                        map: map,
                        title: data.NatureId
                    });
                  
                
            });
            
    var clicker = addClicker(marker, data.NatureId); 
   
        });
                function addClicker(marker, content) {
    google.maps.event.addListener(marker, 'click', function() {
      
      if (infowindow) {infowindow.close();}
      infowindow = new google.maps.InfoWindow({content: content});
      infowindow.open(map, marker);
      
    });
  }
    }
   
    google.maps.event.addDomListener(window, 'load', initialize);

<script type="text/javascript" src = "http://maps.google.com/maps/api/js?sensor=false"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="map" style="border: 2px solid #3872ac;"></div>

和以下是json文件代码。

{  
   "OpperationErrorMsg":"",
   "IsSuccess":true,
   "ResultId":1000,
   "Timestamp":"2016-10-12T18:00:07.0232702Z",
   "Echo":null,
   "InSandbox":true,
   "DebugMessages":[  
   ],
   "MissingDetails":[  
   ],
   "ResponseData":[  
      {  
         "CallTimeLocal":"2016-10-10T06:28:48.7330000",
         "IncidentId":3374,
         "IncidentNumber":"HC2016004034",
         "CallTime":"2016-10-10T10:28:48.7330000",
         "ElapsedSeconds":0,
         "Location":"2712 E HANNA AVE",
         "BuildingName":null,
         "BuildingNumber":null,
         "NatureId":6743,
         "FirePriorityId":1,
         "CoordinateX":-82.429500000000,
         "CoordinateY":28.003389000000
      },
      {  
         "CallTimeLocal":"2016-10-10T11:28:36.7000000",
         "IncidentId":3382,
         "IncidentNumber":"HC2016004042",
         "CallTime":"2016-10-10T15:28:36.7000000",
         "ElapsedSeconds":0,
         "Location":"1220 APOLLO BEACH BLVD S",
         "BuildingName":"Apollo Beach Marina",
         "BuildingNumber":null,
         "NatureId":8035,
         "FirePriorityId":1,
         "CoordinateX":-82.422369000000,
         "CoordinateY":27.781254000000
      },
      {  
         "CallTimeLocal":"2016-10-10T14:29:59.8830000",
         "IncidentId":3387,
         "IncidentNumber":"HC2016004047",
         "CallTime":"2016-10-10T18:29:59.8830000",
         "ElapsedSeconds":0,
         "Location":"9600 SHELDONWOOD RD",
         "BuildingName":null,
         "BuildingNumber":null,
         "NatureId":6420,
         "FirePriorityId":12,
         "CoordinateX":-82.580530000000,
         "CoordinateY":28.034779000000
      },
      {  
         "CallTimeLocal":"2016-10-10T15:27:37.7270000",
         "IncidentId":3389,
         "IncidentNumber":"HC2016004049",
         "CallTime":"2016-10-10T19:27:37.7270000",
         "ElapsedSeconds":0,
         "Location":"4691 GALLAGHER RD",
         "BuildingName":"Strawberry Crest High School",
         "BuildingNumber":null,
         "NatureId":7873,
         "FirePriorityId":2,
         "CoordinateX":-82.236450000000,
         "CoordinateY":28.021233000000
      }
   ],
   "CurrentStatusData":null
}