How to update asp.net mvc view periodically using signalR?

Now I have the following solution. Can someone maybe check my code if this is a common way or will I get some trouble with it?

First I created a hub class "MyHub.cs" Do I have to use lazy initialization? Is the OnReconnected section ok?

 [HubName("data")]
    public class DataHub : Hub
    {
        List<LineUser> userList = new List<LineUser>();
        public static ConcurrentDictionary<string, LineUser> MyUsers = new ConcurrentDictionary<string, LineUser>();

        public override Task OnConnected()
        {
            var context = GlobalHost.ConnectionManager.GetHubContext<DataHub>();

            string userConnectionID = Context.ConnectionId;
            MyUsers.TryAdd(Context.ConnectionId, new LineUser() { ConnectionID = Context.ConnectionId });

            return base.OnConnected();
        }

        public override Task OnReconnected()
        {
            var context = GlobalHost.ConnectionManager.GetHubContext<DataHub>();

            string userConnectionID = Context.ConnectionId;

            if (MyUsers.TryAdd(Context.ConnectionId, new LineUser() { ConnectionID = Context.ConnectionId }))
                _userCount++;

            var resconnectedUser = new LineUser();
            MyUsers.TryGetValue(userConnectionID, out resconnectedUser);
            Groups.Add(userConnectionID, resconnectedUser.LineNr.ToString());

            return base.OnReconnected();
        }

        public override Task OnDisconnected(bool stopCalled)
        {
            var context = GlobalHost.ConnectionManager.GetHubContext<DataHub>();

            string userConnectionID = Context.ConnectionId;

            LineUser garbage;

            var disconnectedUser = new LineUser();
            MyUsers.TryGetValue(userConnectionID, out disconnectedUser);
            Groups.Remove(userConnectionID, disconnectedUser.LineNr.ToString());

            MyUsers.TryRemove(userConnectionID, out garbage);

            return base.OnDisconnected(stopCalled);
        }

        [HubMethodName("registerName")]
        public void RegisterConId(int LineNr, string userConnectionID)
        {
            var oldUser = new LineUser();
            var newUser = new LineUser();
            newUser.LineNr = LineNr;
            newUser.ConnectionID = userConnectionID;
            newUser.Connected = true;

            MyUsers.TryGetValue(userConnectionID, out oldUser);

            MyUsers.TryUpdate(userConnectionID, newUser, oldUser);

            Groups.Add(userConnectionID, LineNr.ToString());
        }

    }

Then I have created an backgoundjob with Quartz.net "BackGroundJob.cs" (This one will be triggered every second from class JobScheduler after application start). If new sensor data are available, I send the sensor data to a specific group(the group name will be created after the client calls the HubMethodName "registerName". Because sensor nr. 6 data should only send to client nr. 6 (all clients with nr. 6 are in group "6")

  public class BackGroundJob : IJob
    {
        //Global variable to save the result between to background job executions
        SensorData oldsensorData = new SensorData();        

        public Task Execute(IJobExecutionContext context)
        {

            var newSensorData = ReadSensorData();

            if (!newSensorData.Equals(oldsensorData))
            {
                IHubContext hub = GlobalHost.ConnectionManager.GetHubContext<DataHub>();

                result = hub.Clients.Group(newSensorData.LineNr.ToString()).announceToLine("Sensor data for Line: " + newSensorData.LineNr.ToString() + " Temp: " + newSensorData.Temp.ToString());

                //Save new data to global object
                oldsensorData = newSensorData;
            }

            throw new NotImplementedException();            
        }

        private SensorData ReadSensorData()
        {
            SensorData newSensorData = new SensorData();
            //Code block to read sensor data from external device and save it to "newSensorData" object

            return newSensorData;
        }
    }

And my client view looks like this: 1. LineData.cshtml

@{
    ViewBag.Title = "Line Data";
}

<h1>Linie: @ViewBag.LineNr</h1>

<h2>Temperature</h2>
<div id="sensorData"></div>

@section scripts{
    <script>
        var LineNr = parseInt(@ViewBag.LineNr);
    </script>

    <script src="~/signalr/js"></script>
    <script src="~/Scripts/my/SignalR.js"></script>
}

and 2. my SignalR.js

(function () {

    var myHub = $.connection.data;

    // start hub connection
    $.connection.hub.start()
        .done(function () {
            //Register line number for group name
            myHub.server.registerName(LineNr, $.connection.hub.id);
        })
        .fail(function () {
            alert("SignalR Error for Line " + LineNr + " !");
        });


    // try reconnect after 5s
    $.connection.hub.disconnected(function () {
        setTimeout(function () {
            $.connection.hub.start();
        }, 5000); // Restart connection after 5 seconds.
    });

    // Clients functions
    myHub.client.announceToLine = function (data) {
        $("#sensorData").html(data);
    }

})()