Decompress zlib'd data

gistfile1.txt

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Ionic.Zlib;

namespace TestZlib
{
    class Program
    {
        static void Main(string[] args)
        {
            var tbl = new Invoice();
            var rates = tbl.All(columns: "rates_json as Rates").First().Rates;

            
            var output = new MemoryStream();

            using (var compressedData = new MemoryStream(rates))
            using (var decompressor = new ZlibStream(compressedData, CompressionMode.Decompress))
            {
                decompressor.CopyTo(output);
            }
            

            output.Position = 0;

            var reader = new StreamReader(output);

            Console.Write(reader.ReadToEnd());

            Console.ReadLine();
        }
    }
}