@classmethod
def from_table(cls, table):
    """Read from `~astropy.table.Table`."""
    return cls(energy_lo=table['ENERG_LO'].quantity[0], energy_hi=table[
        'ENERG_HI'].quantity[0], offset_lo=table['THETA_LO'].quantity[0],
        offset_hi=table['THETA_HI'].quantity[0], data=table['EFFAREA'].
        quantity[0].transpose(), meta=table.meta)
