AzLOCK1  A robust single ID (category 1). The spectroscopic mid-IR PAH redshift 
AzLOCK1   from Coppin et al. (2010ApJ...713..503C) was adopted.
AzLOCK2  A robust single ID (category 1).
AzLOCK3  This source has two category 1 radio IDs, but the high-resolution submm
AzLOCK3   imaging obtained by Younger et al. (2008MNRAS.387..707Y) revealed that
AzLOCK3   the first one (the northern, 24um faint ID) is the correct ID. This is
AzLOCK3   the SCUBA source LOCK850.02 (Ivison et al. 2007, Cat. 
AzLOCK3   J/MNRAS/380/199). The same IDs were selected.
AzLOCK4  Three candidate category 1 radio IDs. The one with the lowest p value, 
AzLOCK4   and confirmation at low radio frequency and 24um was adopted.
AzLOCK5  A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK5   The spectroscopic mid-IR PAH redshift from Coppin et al. 
AzLOCK5   (2010ApJ...713..503C) was adopted.
AzLOCK6  A robust single radio and 8um ID (category 1).
AzLOCK7  A possible blend of two radio/24um sources and an additional red i-K 
AzLOCK7   source (category 1) at the same redshift as the first ID. This is the 
AzLOCK7   SCUBA source LOCK850.04 (Ivison et al. 2007, Cat. J/MNRAS/380/199). 
AzLOCK7   The faintest radio ID considered by Ivison et al. (2007, Cat. 
AzLOCK7   J/MNRAS/380/199) is not in the catalogue used here, as it is blended 
AzLOCK7   with the brighter object. The spectroscopic redshift from Ivison et 
AzLOCK7   al. (2007, Cat. J/MNRAS/380/199) was adopted for the second ID, but 
AzLOCK7   the first ID is the one adopted here.
AzLOCK8  A robust single ID (category 1). This is the SCUBA source LOCK850.01 
AzLOCK8   (Ivison et al. 2007, Cat. J/MNRAS/380/199). The same ID was selected. 
AzLOCK8   The spectroscopic mid-IR PAH redshift from Coppin et al. 
AzLOCK8   (2010ApJ...713..503C) was adopted.
AzLOCK9  A robust ID (category 1) with two possible weaker IDs (category 3). 
AzLOCK9   This is the SCUBA source LOCK850.34 (Ivison et al. 2007, Cat. 
AzLOCK9   J/MNRAS/380/199). We did not select their fainter radio counterpart 
AzLOCK9   due to its low significance and we also considered one additional 
AzLOCK9   24um candidate.
AzLOCK10 A robust ID (category 1) with a possible weaker ID (category 3). The 
AzLOCK10  spectroscopic mid-IR PAH redshift from Coppin et al. 
AzLOCK10  (2010ApJ...713..503C) was adopted for the robust ID.
AzLOCK11 A robust ID (category 1) with a possible radio companion (category 1).
AzLOCK12 A robust ID (category 1) with a possible radio companion (category 3).
AzLOCK13 A robust single ID (category 1).
AzLOCK14 A robust single ID (category 1).
AzLOCK15 A robust single ID (category 1).
AzLOCK16 A robust single ID (category 1) with a possible 8.0um companion 
AzLOCK16  (category 3). A possible blend of weak 24um sources.
AzLOCK17 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK17  This is the SCUBA source LOCK850.15 (Ivison et al. 2007, Cat. 
AzLOCK17  J/MNRAS/380/199). We selected only their second radio IDs as the 
AzLOCK17  remaining two are too far away from the AzTEC position.
AzLOCK18 A robust single ID (category 1).
AzLOCK19 A robust ID (category 1) with a possible red i-K companion 
AzLOCK19  (category 3). A possible blend of weak 24um sources.
AzLOCK20 Two robust IDs (category 1) with a possible weaker radio companion 
AzLOCK20  (category 3). A possible blend of weak 24um sources.
AzLOCK21 A single ID (category 2). A possible blend of weak 24um sources. This 
AzLOCK21  is the SCUBA source LOCK850.13 (Ivison et al. 2007, Cat. 
AzLOCK21  J/MNRAS/380/199). We only selected the brighter (southern) out of 
AzLOCK21  their two 24um IDs, because of low significance of the other one.
AzLOCK22 A blend of four radio sources (category 1 and 3). This is the SCUBA 
AzLOCK22  source LOCK850.43 (Ivison et al. 2007, Cat. J/MNRAS/380/199). We 
AzLOCK22  selected two out of three of their radio IDs and selected two 
AzLOCK22  additional IDs. The inconsistency can be explained by the fact that 
AzLOCK22  the radio image is severely blended at this position.
AzLOCK23 A robust single ID (category 1) with a possible weaker red i-K 
AzLOCK23  companion (category 3).
AzLOCK24 A blend of three radio sources (category 1 and 2). This is the SCUBA 
AzLOCK24  source LOCK850.03 (Ivison et al. 2007, Cat. J/MNRAS/380/199). We 
AzLOCK24  selected both of their radio IDs and an additional faint radio ID. The
AzLOCK24  spectroscopic redshift from Ivison et al. (2007, Cat. J/MNRAS/380/199)
AzLOCK24  was adopted.
AzLOCK25 A robust ID (category 1) with a possible radio companion (category 3).
AzLOCK26 A robust single ID (category 1).
AzLOCK27 Three robust IDs (category 1). A possible blend of weak 24um sources.
AzLOCK27  This is the SCUBA source LOCK850.71 (Ivison et al. 2007, Cat. 
AzLOCK27  J/MNRAS/380/199). The same IDs were selected.
AzLOCK28 No IDs obtained (but only the radio selection could yield IDs due to 
AzLOCK28  lack of coverage at other wavelengths).
AzLOCK29 A robust single ID (category 1).
AzLOCK30 No IDs obtained.
AzLOCK31 No IDs obtained. A possible blend of weak 24um sources.
AzLOCK32 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK33 Two robust IDs (category 1). This is the SCUBA source LOCK850.52 
AzLOCK33  (Ivison et al. 2007, Cat. J/MNRAS/380/199). The same ID was selected.
AzLOCK34 No IDs obtained.
AzLOCK35 Three IDs (category 1 and 3).
AzLOCK36 A single ID (category 2).
AzLOCK37 Three IDs (category 2 and 3).
AzLOCK38 A robust single ID (category 1).
AzLOCK39 Three IDs (category 1 and 3). A possible blend of weak 24um sources.
AzLOCK40 Three IDs (category 1 and 3).
AzLOCK41 A single ID (category 2). A possible blend of weak 24um sources.
AzLOCK42 No IDs obtained. A possible blend of weak 24um sources.
AzLOCK43 Three IDs (category 1 and 3). A possible blend of weak 24um sources. 
AzLOCK43  This is the SCUBA source LOCK850.79 (Ivison et al. 2007, Cat. 
AzLOCK43  J/MNRAS/380/199). We selected the same IDs.
AzLOCK44 A tentative single ID (category 3). A possible blend of weak 24um 
AzLOCK44  sources.
AzLOCK45 A single ID (category 2). A possible blend of weak 24um sources.
AzLOCK46 No IDs obtained. A possible blend of weak 24um sources.
AzLOCK47 A robust single ID (category 1).
AzLOCK48 No IDs obtained (but the 8.0um and i-K methods could not be used due to
AzLOCK48  lack of coverage at these wavelengths).
AzLOCK49 No IDs obtained.
AzLOCK50 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK51 Three IDs (category 1 and 3).
AzLOCK52 A robust single ID (category 1).
AzLOCK53 No IDs obtained.
AzLOCK54 Four IDs (category 1, 2 and 3).
AzLOCK55 Three IDs (category 1 and 3).
AzLOCK56 Three IDs (category 2). This is the SCUBA source LOCK850.06 (Ivison et 
AzLOCK56  al. 2007, Cat. J/MNRAS/380/199). The same IDs were selected.
AzLOCK57 A single ID (category 1). A possible blend of weak 24um sources.
AzLOCK58 Two IDs (category 1).
AzLOCK59 No IDs obtained (but the 8.0um and i-K methods could not be used due to
AzLOCK59  lack of coverage at these wavelengths).
AzLOCK60 No IDs obtained. A possible blend of weak 24um sources.
AzLOCK61 Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzLOCK62 A robust single ID (category 1). The spectroscopic mid-IR PAH redshift 
AzLOCK62  from Coppin et al. (2010ApJ...713..503C) was adopted.
AzLOCK63 Two IDs (category 2 and 3).
AzLOCK64 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK65 A tentative single ID (category 3). A possible blend of weak 24um 
AzLOCK65  sources.
AzLOCK66 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK67 Two IDs (category 1 and 3).
AzLOCK68 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK69 A robust single ID (category 1).
AzLOCK70 No IDs obtained. A possible blend of weak 24um sources.
AzLOCK71 A tentative single ID (category 3).
AzLOCK72 A tentative single ID (category 3). A possible blend of weak 24um 
AzLOCK72  sources.
AzLOCK73 A robust single ID (category 1).
AzLOCK74 Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzLOCK75 Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzLOCK76 A tentative single ID (category 3). A possible blend of weak 24um 
AzLOCK76  sources.
AzLOCK77 Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzLOCK78 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK79 A tentative single ID (category 3). A possible blend of weak 24um 
AzLOCK79  sources.
AzLOCK80 Two IDs (category 1) at similar redshifts.
AzLOCK81 Two IDs (category 3). A possible blend of weak 24um sources.
AzLOCK82 Five IDs (category 1 and 3).
AzLOCK83 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK84 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK85 Four IDs (category 1 and 2).
AzLOCK86 Three IDs (category 1 and 3). A possible blend of weak 24um sources. 
AzLOCK86  This is the SCUBA source LOCK850.14 (Ivison et al. 2007, Cat. 
AzLOCK86  J/MNRAS/380/199). We only selected the closer out of their two radio 
AzLOCK86  IDs, because of low significance of the other one. The spectroscopic 
AzLOCK86  redshift from Ivison et al. (2007, Cat. J/MNRAS/380/199) was adopted.
AzLOCK87 A robust single ID (category 1).
AzLOCK88 A robust single ID (category 1). A possible blend of weak 24um sources.
AzLOCK89 Two robust IDs (category 1) at low redshift (0.14). A possible blend of
AzLOCK89  weak 24um sources. Its 1.1mm-to-1.4 GHz flux density ratio is also 
AzLOCK89  consistent with z<~0.5.
AzLOCK90 No IDs obtained.
AzLOCK91 A robust single ID (category 1).
AzUDS1   No IDs obtained (but the 8.0um and i-K methods could not be used due to
AzUDS1    lack of coverage at these wavelengths).
AzUDS2   A tentative single ID (category 3).
AzUDS3   Two robust IDs (category 1).
AzUDS4   No IDs obtained (but the i-K method could not be used due to lack of 
AzUDS4    coverage at these wavelengths). A possible blend of weak 24um sources.
AzUDS5   A robust single ID (category 1). This is the SCUBA source SXDF850.03 
AzUDS5    (Ivison et al. 2007, Cat. J/MNRAS/380/199). The same ID was selected. 
AzUDS5    The optical counterpart and the radio ID may correspond to a possible 
AzUDS5    lensing galaxy and a lensed source (see Section 'IDENTIFICATIONS').
AzUDS6   Two IDs (category 1 and 3).
AzUDS7   Two IDs (category 1 and 3).
AzUDS8   A robust single ID (category 1).
AzUDS9   No IDs obtained. A possible blend of weak 24um sources.
AzUDS10  A robust single ID (category 1). A very close star makes the photometry
AzUDS10   difficult to obtain. This is the SCUBA source SXDF850.29 (Ivison et 
AzUDS10   al. 2007, Cat. J/MNRAS/380/199). The same ID was selected.
AzUDS11  A tentative single ID (category 3). A possible blend of weak 24um 
AzUDS11   sources.
AzUDS12  A tentative single ID (category 3).
AzUDS13  A tentative single ID (category 3).
AzUDS14  No IDs obtained.
AzUDS15  Two IDs (category 1 and 3).
AzUDS16  A single ID (category 2).
AzUDS17  Two IDs (category 1 and 3).
AzUDS18  No IDs obtained (but the 8.0um and i-K methods could not be used due to
AzUDS18   lack of coverage at these wavelengths).
AzUDS19  No IDs obtained (but the i-K methods could not be used due to lack of 
AzUDS19   coverage at these wavelengths).
AzUDS20  No IDs obtained.
AzUDS21  Two IDs (category 1 and 3).
AzUDS22  No IDs obtained (but the i-K methods could not be used due to lack of
AzUDS22   coverage at these wavelengths).
AzUDS23  A robust single ID (category 1).
AzUDS24  No IDs obtained (but the i-K methods could not be used due to lack of 
AzUDS24   coverage at these wavelengths).
AzUDS25  A robust single ID (category 1).
AzUDS26  Two IDs (category 1 and 3).
AzUDS27  Three IDs (category 1 and 3). A possible blend of weak 24um sources.
AzUDS28  Two IDs (category 1 and 3) at similar redshifts. A possible blend of 
AzUDS28   weak 24um sources.
AzUDS29  Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzUDS30  Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzUDS31  No IDs obtained.
AzUDS32  A robust single ID (category 1).
AzUDS33  Two IDs (category 1 and 3). This is the SCUBA source SXDF850.01 
AzUDS33   (Ivison et al. 2007, Cat. J/MNRAS/380/199). We selected an additional 
AzUDS33   category 3 ID.
AzUDS34  A robust single ID (category 1).
AzUDS35  A robust single ID (category 1).
AzUDS36  A single ID (category 3).
AzUDS37  No IDs obtained.
AzUDS38  Five IDs (category 1 and 3). A possible blend of weak 24um sources.
AzUDS39  No IDs obtained. A possible blend of weak 24um sources.
AzUDS40  Two IDs (category 1 and 3).
AzUDS41  No IDs obtained.
AzUDS42  Five IDs (category 1 and 3). A possible blend of weak 24um sources.
AzUDS43  Two robust IDs (category 1). A possible blend of weak 24um sources. 
AzUDS43   The first and second IDs may correspond to a possible lensing galaxy 
AzUDS43   and a lensed source (see Section 'IDENTIFICATIONS'). The redshift of 
AzUDS43   the second ID was used in the analysis of the redshift distribution.
AzUDS44  No IDs obtained.
AzUDS45  A robust single ID (category 1). A possible blend of weak 24um sources.
AzUDS46  No IDs obtained.
AzUDS47  Five IDs (category 1). The high-resolution submm imaging revealed that 
AzUDS47   the second one (the most northern with z=~2.48) is the correct ID 
AzUDS47   (Hatsukade et al. 2010ApJ...711..974H). This is the SCUBA source 
AzUDS47   SXDF850.06 (Ivison et al. 2007, Cat. J/MNRAS/380/199). The same radio 
AzUDS47   IDs were selected.
AzUDS48  A robust single ID (category 1). A possible blend of weak 24um sources.
AzUDS49  A robust single ID (category 1).
AzUDS50  Two IDs (category 1 and 3). A possible blend of weak 24um sources.
AzUDS51  No IDs obtained. This is the SCUBA source SXDF850.5 (Ivison et al. 
AzUDS51   2007, Cat. J/MNRAS/380/199). Their 3{sigma} radio ID is not selected 
AzUDS51   as it is too far away from the AzTEC position, which is offset from 
AzUDS51   the SCUBA position by =~5arcsec.
AzUDS52  Four tentative IDs (category 3).
AzUDS53  A tentative ID (category 3).
AzUDS54  A robust single ID (category 1).
AzUDS55  A robust single ID (category 1). A possible blend of weak 24um sources.
AzUDS56  No IDs obtained. A possible blend of weak 24um sources. This is the 
AzUDS56   SCUBA source SXDF850.18 (Ivison et al. 2007, Cat. J/MNRAS/380/199). 
AzUDS56   Their radio ID was not selected due to its low significance.
AzUDS57  A tentative single ID (category 3).