>>> from example_data import synthetic_event
>>> data=synthetic_event()
>>> print data['PPolarity']
{'Error': matrix([[ 0.05],
        [ 0.05],
        [ 0.05],
        [ 0.01],
        [ 0.01],
        [ 0.01],
        [ 0.01],
        [ 0.01],
        [ 0.01],
        [ 1.  ],
        [ 0.01],
        [ 1.  ],
        [ 1.  ],
        [ 0.01],
        [ 0.05],
        [ 0.05]]), 'Stations': {'Azimuth': matrix([[  55.9],
        [  76.9],
        [ 277.9],
        [   5.4],
        [ 224.7],
        [  31.9],
        [  47.9],
        [  45.2],
        [ 224.6],
        [ 122.6],
        [ 328.4],
        [  45.2],
        [ 309.3],
        [ 187.7],
        [  16.1],
                    [ 193.4]]), 'Name': ['S0517', 'S0415', 'S0347', 'S0534', 
            'S0244', 'S0618', 'S0650', 'S0595', 'S0271', 'S0155', 'S0529', 
            'S0649', 'S0450', 'S0195', 'S0588', 'S0142'], 'TakeOffAngle': 
            matrix([[ 122.8],
        [ 120.8],
        [ 152.4],
        [ 138.7],
        [ 149.6],
        [ 120. ],
        [ 107.4],
        [ 117. ],
        [ 156.4],
        [ 115.3],
        [ 133.3],
        [ 109.1],
        [ 139.9],
        [ 147.2],
        [ 128.7],
        [ 137.6]])}, 'Measured': matrix([[-1],
        [-1],
        [ 1],
        [-1],
        [ 1],
        [-1],
        [-1],
        [-1],
        [ 1],
        [ 1],
        [-1],
        [-1],
        [-1],
        [ 1],
        [-1],
        [ 1]])}