<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def data(self) -> Sequence[Tuple[int, float]]: """Returns a sequence of tuple pairs with the first item being a number of Cliffords and the second item being the corresponding average ground state probability. """

        return [(num, prob) for num, prob in zip(self._num_cfds_seq,
                                                 self._gnd_state_probs)]