@property
    def P1_2(self):
        return self._P1_2
@todo: docstring
dataset/ETHPy150Open rlabbe/filterpy/filterpy/kalman/square_root.py/SquareRootKalmanFilter.P1_2--crossover with--dataset/ETHPy150Open sahana/eden/modules/s3db/survey.py/survey_S3AnalysisPriority.desc