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Table A.1

Observational details.

Transition(s) Date # Scans Time (on) Remarks
[min]

IRAS 16293A
H13CN(32), HC15N(32) 2012-04-01 67 20
H13CN(43), HC15N(43) 2012-06-04 41 12
H13C15N(32) 2012-06-13 150 44 USB (30 scans), LSB (120 scans)
LSB suffers from strong spur
DCN(32) 2012-06-08 29 9 scans 47-48 ignored (LO locked out)
DCN(43) 2012-06-07 30 9
DCN(5–4), HNC(43) 2012-06-04 40 12 baseline ripples
D13CN(32) 2012-06-08 120 35 scans 541-542 ignored (LO locked out)
2012-06-09 41 12 scans 215-218 ignored (LO locked out)
2012-06-10 50 15
2012-06-11 60 18
HN13C(32), H13CN(32), HC15N(32) 2013-08-20 36 21 H13CN and HC15N intensities higher than
those observed on 2012-04-01
H15NC(32), HCN(32) 2013-08-19 36 21

R CrA IRS 7B
HN13C(32), H13CN(32), HC15N(32) 2012-08-16 30 9
2012-09-27 50 15
HN13C(43), H13CN(43) 2012-08-22 50 15
2012-09-25 30 9
H15NC(32), HCN(32) 2012-08-16 108 32
2012-09-27 140 41
2012-09-29 90 26
2012-09-30 40 12 intensities and line profiles off, data discarded
2012-11-20 30 9
2012-11-21 40 12
2012-11-23 100 29
2012-11-24 10 3
2012-11-28 50 15
HNC(32) 2012-09-27 20 6

OMC3 MMS6
HN13C(32), H13CN(32), HC15N(32) 2012-08-16 28 8
2012-11-22 120 35
HN13C(43), H13CN(43) 2012-09-26 30 9
H15NC(32), HCN(32) 2012-08-16 70 21
2012-09-25 170 50
2012-11-24 90 26
2012-11-25 70 21
2012-11-26 190 56
HNC(32) 2012-09-27 10 3

Elias 29
HN13C(32), H13CN(32), HC15N(32) 2012-08-16 30 9
HN13C(43), H13CN(43) 2012-09-30 80 24
H15N(32)C, HCN(32) 2012-08-16 50 15 intensity on the two days is very different
2012-10-01 76 23 (factor of ~1.5), data not used
HNC(32) 2012-09-30 160 47
2012-10-01 50 15

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