VLBI observations of optically-bright extragalactic radio sources for the alignment of the radio frame with the future Gaia frame - I. Source detection

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Table 2:

VLBI detection rates for the 447 weak extragalactic radio sources observed during EC025A and EC025B. In this study, *detection* means that at this frequency the ${\it SNR }\geq 7$ , for at least one scan on one baseline.
	Sources	$\vec X$ -band	$\vec S$ -band	$\vec S$ and $\vec X$
	observed	detection	detection	detection
EC025A	218	216 sources	211 sources	211 sources
		99%	96%	96%
EC025B	229	216 sources	188 sources	187 sources
		94%	82%	82%
Overall	447	432 sources	399 sources	398 sources
		97%	89%	89%

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