public String getColumnName(int col)
        {
            switch (col)
            {
                case 0:
                    return "Channel";
                case 1:
                    return "Type";
                case 2:
                    return "Num Msgs";
                case 3:
                    return "Hz";
                case 4:
                    return "1/Hz";
                case 5:
                    return "Jitter";
                case 6:
                    return "Bandwidth";
                case 7:
                    return "Undecodable";
            }
            return "???";
        }