Real indata

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {

            int HowManyDecimal(string input)
            {
                input = input.Substring(input.IndexOf('.') + 1);
                if (input.Contains("E"))
                {
                    input = input.Remove(input.IndexOf('E'));
                }

                return input.Length;
            }

            bool IsDate(ref string input)
            {
                return input.Contains("-") && !input.Contains("E");
            }

            bool IsTime(ref string input)
            {
                return input.Contains(":");
            }

            bool IsMeasure(ref string input)
            {
                return HowManyDecimal(input) == 2;
            }

            bool IsLocation(ref string input)
            {
                return HowManyDecimal(input) == 3;
            }

            bool IsResult(ref string input)
            {
                return input[0] == 'A' || input[0] == 'R';
            }

            string Date ="";
            string Time = "";
            string Measure = "";
            string Location = "";
            string Result = "";

            string Input2 = "2019-10-29\t17:45:21\t3.44E-6\t5.454\tReject\r\n";
            string Input3 = "2019-10-29\t17:45:21\t0.00\t5.454\tReject\r\n";
            string Input = "2019-10-29\t3.44E-6\t5.454\tReject\r\n";
            string Input5 = "17:45:21\t3.44E-6\t5.454\tReject\r\n";
            string Input4 = "17:45:21\t5.454\tReject\r\n";
            string Input6 = "5.454\tReject\r\n";

            string[] strlist = Input.Split("\t");

            for(int i = 0; i < strlist.Length; i++)
            {
                if (IsDate(ref strlist[i]))
                    Date = strlist[i];

                else if(IsTime(ref strlist[i]))
                    Time = strlist[i];

                else if (IsMeasure(ref strlist[i]))
                    Measure = strlist[i];

                else if (IsLocation(ref strlist[i]))
                    Location = strlist[i];

                else if (IsResult(ref strlist[i]))
                    Result = strlist[i];
            }

            Console.WriteLine("Date: " + Date + "\n" + "Time: " + Time + "\n" + "Measure: " + Measure + "\n" + "Location: " + Location + "\n" + "Result: " + Result + "\n");
        }
    }
}