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Table 3

Number of sources with one (1) or more (2, 3) 2MASS counterparts.

Field 1 2 3 Total Xa Total IRb

E 121 30 2 153 187
C 53 10 1 64 76
S 23 1 1 25 28
W 47 1 48 49

Total 244 42 4 290 340

Notes.

(a)

Total number of X-ray sources with 2MASS counterparts for each observed field;

(b)

the sum of NIR counterparts, by considering single and multiple candidates.

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