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Table 2

Spitzer/IRAC datasets analysed for this study.

Filter(i) Prog. ID AORs(ii) UT start date(iii) Nframes Mode(iv) Pip. (v)
Ch1 (3.6 µm) 13242 64973056 2018-01-29 16:47:26 17536 sub, 2.0 S19.2.0
64974080 2018-01-30 02:42:12 9408
64973568 2018-01-30 08:03:03 21120
64975104 2018-01-30 19:58:36 21120

Ch2 (4.5 µm) 13242 64974592 2018-01-27 03:53:22 17536 sub, 2.0 S19.2.0
64972544 2018-01-27 13:48:00 9408
64974848 2018-01-27 19:08:43 21120
64972288 2018-01-28 07:04:09 21120

Notes. (i) IRAC channel and central wavelength.(ii)Astronomical observation requests.(iii)Timestamp of the first frame of the AOR. (iv)Readout mode and frame time in seconds. (v)Pipeline version of the basic calibrated data.

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