def tx_min(tasmax, freq='YS'):
    r"""Lowest max temperature

    The minimum of daily maximum temperature.

    Parameters
    ----------
    tasmax : xarray.DataArray
      Maximum daily temperature [℃] or [K]
    freq : str, optional
      Resampling frequency

    Returns
    -------
    xarray.DataArray
      Minimum of daily maximum temperature.

    Notes
    -----
    Let :math:`TX_{ij}` be the maximum temperature at day :math:`i` of period :math:`j`. Then the minimum
    daily maximum temperature for period :math:`j` is:

    .. math::

        TXn_j = min(TX_{ij})
    """

    return tasmax.resample(time=freq).min(dim='time', keep_attrs=True)
def tx_min ( tasmax , freq = 'YS' ) : return tasmax . resample ( time = freq ) . min ( dim = 'time' , keep_attrs = True )
r"""Lowest max temperature

    The minimum of daily maximum temperature.

    Parameters
    ----------
    tasmax : xarray.DataArray
      Maximum daily temperature [℃] or [K]
    freq : str, optional
      Resampling frequency

    Returns
    -------
    xarray.DataArray
      Minimum of daily maximum temperature.

    Notes
    -----
    Let :math:`TX_{ij}` be the maximum temperature at day :math:`i` of period :math:`j`. Then the minimum
    daily maximum temperature for period :math:`j` is:

    .. math::

        TXn_j = min(TX_{ij})