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Table 1

Overview of the observational parameters of the three LOFAR-HBA observations.

Field A B C
Observation ID L428654 L431160 L431596
Start time [UTC] 27-Jan.-2016 20:11:00 10-Feb.-2016 20:11:00 16-Feb.-2016 18:37:52
End time [UTC] 28-Jan.-2016 03:51:00 11-Feb.-2016 03:51:00 17-Feb.-2016 02:17:52
Phase centre: RA, Dec (J2000) 07h26m42s, + 48°12′00′′ 08h13m30s, + 40°24′00′′ 08h44m42s, + 33°54′00′′
Phase centre: l, b 169.807587°, + 25.520618° 180.389768°, + 32.212486° 189.488030°, + 37.207857°

Observing frequency range 115–175 MHz
Observing spectral resolution 3.05 kHz
Observing integration time 2 s
Observing time 7 h 40 min

Frequency range used in Faraday tomography: 115–150 MHz with 183 kHz sub-band width

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