Interval              MPECS Discovery Observations
2004-Q2                    1         0            2
2004-Q3                    0         0            0
2004-Q4                    1         0            1
2005-Q1                    0         0            0
2005-Q2                    0         0            0
2005-Q3                    1         0            1
2005-Q4                    1         0            4