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Table 1

The cross-correlation of the relative signal intensity at 44.5 MHz between LOFAR station CS002 and other stations across the LOFAR core for a time interval of 17:00–18:00 UT. The lag compared to station CS002 is shown, with positive values indicating that the structure was observed at this location after CS002. The correlation at this lag and the correlation at zero lag are shown. The velocity has been calculated assuming that the direction of propagation of the structure is parallel to a straight line between stations from which the lag is calculated. The stations with the positive and negative velocities closest to zero are shown in bold type.

Station Lag compared to CS002 (s) Correlation at this lag Correlation at zero lag Distance (km) Velocity (m/s)
CS001 24.2 0.97 0.77 0.44 18.2
CS002 1.00 1.00 0.00
CS003 −1.5 1.00 1.00 0.12 −81.4
CS004 4.0 0.99 0.98 0.12 30.8
CS005 3.0 0.99 1.00 0.13 41.8
CS006 0.0 0.99 0.99 0.13
CS007 −2.5 0.99 0.99 0.09 −36.3
CS011 0.0 0.99 0.99 0.29
CS013 −7.5 0.94 0.92 0.38 −50.3
CS017 −12.1 0.97 0.91 0.49 −40.9
CS021 −1.5 0.96 0.97 0.54 −358.1
CS024 26.2 0.96 0.68 0.84 32.3
CS026 −21.6 0.94 0.79 0.87 −40.1
CS028 −47.8 0.84 0.55 1.23 −25.7
CS030 −24.2 0.93 0.81 0.97 −40.3
CS031 3.0 0.94 0.94 0.78 258.0
CS032 35.2 0.96 0.63 0.73 20.7
CS101 −45.3 0.88 0.58 1.11 −24.6
CS103 −46.3 0.93 0.55 1.82 −39.2
CS201 −5.5 0.95 0.94 0.92 −165.5
CS301 49.8 0.93 0.31 1.04 20.9
CS302 125.8 0.82 0.09 2.05 16.3
CS401 33.7 0.95 0.67 0.94 27.9
CS501 −42.8 0.86 0.61 1.27 −29.6

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