using System;

using System.Text.RegularExpressions;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

using Newtonsoft.Json.Linq;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {   

        string jsonStr = "[{ \"id\":\"2932675\", \"t\" : \"GNK\" , \"e\" : \"LON\" , \"l\" : \"915.00\" , \"l_fix\" : \"915.00\" , \"l_cur\" : \"GBX915.00\" , \"s\": \"0\" , \"ltt\":\"5:08PM GMT\" , \"lt\" : \"Dec 11 5:08PM GMT\"}]";

        var obj = JsonConvert.DeserializeObject<JArray>(jsonStr).ToObject<List<JObject>>().FirstOrDefault();

        Console.WriteLine("t = " + obj["t"]);

        Console.WriteLine("l = " + obj["l"]);

    }

}