old_contents: # coding=utf-8
  # Filename: constants.py
  # pylint: disable=C0103
  """
  The constants used in KM3Pipe.
  
  """
  from __future__ import division, absolute_import, print_function
  
  # TODO: this module should be refactored soon!
  
  import math
  
  
  c = 2.99792458e8  # m/s
  
  n_water_antares_phase = 1.3499
  n_water_antares_group = 1.3797
  n_water_km3net_group = 1.3787
  n_water_antares = n_water_antares_group
  theta_cherenkov_water_antares = math.acos(1 / n_water_antares_phase)
  theta_cherenkov_water_km3net = math.acos(1 / n_water_km3net_group)
  c_water_antares = c / n_water_antares_group
  c_water_km3net = c / n_water_km3net_group
  
  # Math
  pi = math.pi
  e = math.e
  
  # Default values for time residuals
  dt_window_l = -15  # ns
  dt_window_h = +25  # ns
  
new_contents: # coding=utf-8
  # Filename: constants.py
  # pylint: disable=C0103
  """
  The constants used in KM3Pipe.
  
  """
  from __future__ import division, absolute_import, print_function
  
  # TODO: this module should be refactored soon!
  
  import math
  
  
  # Detector related parameters
  arca_frame_duration = 0.1  # s
  orca_frame_duration = 0.1  # s
  
  c = 2.99792458e8  # m/s
  
  n_water_antares_phase = 1.3499
  n_water_antares_group = 1.3797
  n_water_km3net_group = 1.3787
  n_water_antares = n_water_antares_group
  theta_cherenkov_water_antares = math.acos(1 / n_water_antares_phase)
  theta_cherenkov_water_km3net = math.acos(1 / n_water_km3net_group)
  c_water_antares = c / n_water_antares_group
  c_water_km3net = c / n_water_km3net_group
  
  # Math
  pi = math.pi
  e = math.e
  
  # Default values for time residuals
  dt_window_l = -15  # ns
  dt_window_h = +25  # ns
  
subject: Add frame duration