A highly magnetized twin-jet base pinpoints a supermassive black hole

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Table 1

Participating GMVA stations.

Station	Diameter	SEFD	Observation
	[m]	[Jy]

Metsähovi	14	17650	√
Onsala	20	5100	–^a
Effelsberg	100	930	√
Plateau de Bure	35^b	450	√
Pico Veleta	30	640	√
VLBA NL	25	4550	√
VLBA FD	25	3030	√
VLBA LA	25	1390	√
VLBA KP	25	3450	√
VLBA PT	25	2270	√
VLBA OV	25	3570	√
VLBA BR	25	3230	√
VLBA MK	25	5560	√

Notes.

^(a)

Data loss due to receiver problems.

^(b)

Equivalent (5 × 15 m).

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