using System;

using System.Collections.Generic;

using System.Linq;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var json = "[{ coordinates: [-74, 40.7], values: [22.4, 23.2, 21.5, 20.6,12.3], }, { coordinates: [-77, 38.90], values: [13.4, 18.2, 24.5, 10.6, 16.3], }, { coordinates: [-87, 41.88], values: [39.3, 28.8, 10.4, 20.0, 0], }]";

        var mapDataLists = JsonConvert.DeserializeObject<List<MapDataList>>(json);

        var coordinates = mapDataLists.SelectMany(d => d.coordinates);

        var values = mapDataLists.SelectMany(d => d.values);

        Console.WriteLine("Coordinates");

        foreach(var d in coordinates){

            Console.WriteLine(d);

        }

        Console.WriteLine("Values");

        foreach(var d in coordinates){

            Console.WriteLine(d);

        }

    }

}

​

public class MapDataList

{

    public List<double> coordinates { get; set; }

    public List<double> values { get; set; }

}