new_contents: ####
  ####
  ####
  #### This code takes the footer value and works backwards replacing incorrect times
  ####  with correct times
  ####
  ####
  ####
  def pre_append(line, file_name):
      fobj = fileinput.FileInput(file_name, inplace=1)
      first_line = fobj.readline()
      sys.stdout.write("%s%s" % (line, first_line))
      for line in fobj:
          sys.stdout.write("%s" % line)
      fobj.close()
  
  import datetime as dt
  import os
  import sys
  import numpy as np
  import linecache
  import fileinput
  
  f = sys.argv[1]
  
  dt1 = dt.timedelta(seconds=-1)
  header = linecache.getline(f, 1)
  line1 = linecache.getline(f,3)
  line2 = linecache.getline(f,4)
  linecache.clearcache()
  
  data = np.genfromtxt(f, delimiter=",", autostrip=True, skip_header=1)
  datatime = data[:,0]
  datatimeold = data[:,0]
  
  shead = header.split(',')
  sline1 = line1.split(',')
  sline2 = line2.split(',')
  probetype = shead[0]
  htime = shead[2]
  ltime = sline1[0]
  l2time = sline2[0]
  
  hstime = dt.datetime.strptime(htime,"%H:%M:%S")+dt1
  if len(line1) >= 50:
      lstime = dt.datetime.strptime(ltime,"%H%M%S")
      ls2time = dt.datetime.strptime(l2time,"%H%M%S")
  else:
      lstime = dt.datetime.strptime(ltime,"%H%M%S.%f")
      l2stime = dt.datetime.strptime(l2time,"%H%M%S.%f")
  dttime = datatime[2]-datatime[1]
  print(dttime)
  if dttime <= 1.0:
      print("dt = 1.0")
      dt1 = dt.timedelta(seconds=-1)
  if dttime <= 0.3:
      print("dt = 0.2")
      dt1 = dt.timedelta(microseconds=-200000)
  if dttime <= 0.1:
      print("dt = 0.1")
      dt1 = dt.timedelta(microseconds=-100000) 
  temptime = hstime
  #MANUAL CHANGES
  #dt1 = dt.timedelta(microseconds=-200000)
  
  print(len(line1))
  if len(line1) >= 50:  #if true b probe
      
      for i in range(len(datatime),-1,-1):
          temptime =temptime + dt1
          datatime[i]=temptime.strftime('%H%M%S')
      data[:,0] = datatime
      np.savetxt(f+'.tmp',data,delimiter=",", fmt='%06d,%02.1f,%02.1f,%03.1f,%02.1f,%03.1f,%01.2f,%02.1f,%02.1f,%d,%d')
      pre_append(header,f+'.tmp')
      os.rename(f+'.tmp',f)
  else:
      for i in range(len(datatime)-1,-1,-1):
          temptime = temptime + dt1
          datatime[i]=temptime.strftime("%H%M%S.%f")
      data[:,0] = datatime
      np.savetxt(f+'.tmp',data,delimiter=",",fmt='%08.1f,%02.1f,%02.1f,%03.1f,%02.1f,%03.1f,%d,%d')
      pre_append(header,f+'.tmp')
      os.rename(f+'.tmp',f)
  
          
  
subject: Create changetimesn.py