class InternalGains:
  def __init__(self):
    self._average_internal_gain_w_m2 = None
    self._convective_fraction = None
    self._radiative_fraction = None
    self._latent_fraction = None

  @property
  def average_internal_gain_w_m2(self):
    return self._average_internal_gain_w_m2

  @average_internal_gain_w_m2.setter
  def average_internal_gain_w_m2(self, value):
    self._average_internal_gain_w_m2 = value

  @property
  def convective_fraction(self):
    return self._convective_fraction

  @convective_fraction.setter
  def convective_fraction(self, value):
    self._convective_fraction = value

  @property
  def radiative_fraction(self):
    return self._radiative_fraction

  @radiative_fraction.setter
  def radiative_fraction(self, value):
    self._radiative_fraction = value

  @property
  def latent_fraction(self):
    return self._latent_fraction

  @latent_fraction.setter
  def latent_fraction(self, value):
    self._latent_fraction = value