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This article has an erratum: [https://doi.org/10.1051/0004-6361/201423793e]


Table 2

Number of sources, average total baseline (Ttot, in days), and average number of epochs Nep in each filter, in our initial database.

Filter N Ttot Nep

Z 204 245 1033 51
Y 212 334 1061 56
J 212 717 1058 58
H 212 169 1074 61
K 201 645 1065 60

H2 110 587 429 4
Brγ 130 307 258 2
nbj 68 048 120 3

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