https://github.com/apache/airflow/blob/3a349624a20d3432dc75e337d6ffb1109a50e451/airflow/providers/amazon/aws/operators/athena.py#L49

What is the unit of measurement of time used here?
airflow/providers/amazon/aws/operators/athena.py
"""
        Run Presto Query on Athena
        """
        self.query_execution_context['Database'] = self.database
        self.result_configuration['OutputLocation'] = self.output_location
        self.query_execution_id = self.hook.run_query(
            self.query,
            self.query_execution_context,
            self.result_configuration,
            self.client_request_token,
            self.workgroup,
        )
        query_status = self.hook.poll_query_status(self.query_execution_id, self.max_tries)
        if query_status in AWSAthenaHook.FAILURE_STATES:
            error_message = self.hook.get_state_change_reason(self.query_execution_id)
            raise Exception(
                'Final state of Athena job is {}, query_execution_id is {}. Error: {}'.format(
                    query_status, self.query_execution_id, error_message
                )
            )
        elif not query_status or query_status in AWSAthenaHook.INTERMEDIATE_STATES:
            raise Exception(
                'Final state of Athena job is {}. '
                'Max tries of poll status exceeded, query_execution_id is {}.'.format(
                    query_status, self.query_execution_id
                )
            )
        return self.query_execution_id
    def on_kill(self) -> None: