Regular Expressions (RegEx) - 04. Weather

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace _10b_Regular_Expressions_RegEx_Exercises
{
    class Regular_Expressions_RegEx_Exercises
    {
      static void Main(string[] args)
        {
            string input = Console.ReadLine();
            string pattern = @"(?<city>[A-Z]{2})(?<temperature>([\d]+)\.([\d]+))(?<weather>[A-Za-z]+)(\|)";
            List<string> lines = new List<string>();

            while (input != "end")
            {
                lines.Add(input);
                input = Console.ReadLine();
            }

            List<Match> myMatches = new List<Match>();
            foreach (var line in lines)
            {
                MatchCollection m = Regex.Matches(line, pattern);
                foreach (Match thisMatch in m)
                {
                    myMatches.Add(thisMatch);
                }
            }

            Dictionary<string, List<string>> weather = new Dictionary<string, List<string>>();
            foreach (Match current in myMatches)
            {
                if (!weather.ContainsKey(current.Groups["city"].Value))
                {
                    List<string> list = new List<string>();
                    list.Add(current.Groups["temperature"].Value);
                    list.Add(current.Groups["weather"].Value);
                    weather.Add(current.Groups["city"].Value, list);
                }
                else
                {
                    weather[current.Groups["city"].Value].Clear();
                    weather[current.Groups["city"].Value].Add(current.Groups["temperature"].Value);
                    weather[current.Groups["city"].Value].Add(current.Groups["weather"].Value);
                }
            }
            foreach (var pair in weather.OrderBy(x => double.Parse(x.Value[0])))
            {
                Console.WriteLine($"{pair.Key} => {double.Parse(pair.Value[0]):F2} => {pair.Value[1]}");
            }
        }
    }
}