Rainfall collector

// Rainfall collector program

using System;
using System.IO;

class Submission
{
    // -------------------------
    // Subprograms
    // -------------------------
    static string[,] read_data(string filename)
    {
        int num_regions = 7;
        string[,] data = new string[num_regions, 2];
        using (StreamReader file = new StreamReader(filename))
        {
            for (int region = 0; region < num_regions; region++)
            {
                string data_row = file.ReadLine();
                data_row = data_row.Trim();
                // Split the row of data by the comma separator into fields
                string[] data_list = data_row.Split(',');
                // Populate the data table with the fields
                data[region, 0] = data_list[0];
                data[region, 1] = data_list[1];
            }
        }
        return data;
    }

    static string padded_label(string label, int characters)
    {
        return label + new string(' ', characters - label.Length);
    }


    static void output_table(string[,] data)
    {
        int num_regions = 7;
        int characters = 0;
        for (int region = 0; region < num_regions; region++)
        {
            if (data[region, 0].Length > characters)
            {
                characters = data[region, 0].Length;
            }
        }
        for (int region = 0; region < num_regions; region++)
        {
            string table_row = padded_label(data[region, 0], characters);
            table_row += " | " + data[region, 1];
            Console.WriteLine(table_row);
        }
        Console.WriteLine();
    }


// -------------------------
// Main program
// -------------------------
public static void Main(string[] args)
    {
        string[,] data = read_data("data.txt");
        output_table(data);
    }

}