What did the seahorse swallow? APEX 170 GHz observations of the chemical conditions in the Seahorse infrared dark cloud

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Table 2

Observational parameters.

Source	t_ON ^(a)	PWV	T_sys ^(b)	1σ rms^(b)
	[min]	[mm]	[K]	[mK]
SMM 1	6.4	0.5	94	13.1
SMM 2	6.4	0.5	94	13.1
SMM 3	6.4	0.5	95	12.8
BLOB 2	6.4	0.5 & 1.2^(c)	106	11.9
BLOB 1	6.4	0.6	100	14.4
SMM 4	6.4	0.6	98	12.9
SMM 5	6.4	0.6	97	8.7
IRAS 13037-6112	6.4	0.6	97	11.8
SMM 6	6.5	0.6	96	14.5
SMM 7	6.4	0.6	96	12.8
IRAS 13039-6108	6.4	0.6	95	15.0
SMM 8	6.5	0.6	95	12.7
SMM 9	6.4	0.6	95	13.1
IRAS 13042-6105	6.4	0.6 & 1.2^(c)	107	16.7

Notes. ^(a) On-source integration time. ^(b) The system temperature and 1σ rms noise level (at a velocity resolution of 0.21 km s⁻¹) are given in the main-beam brightness temperature scale. ^(c)The source was observed on two different days (the higher PWV occurred on 16 December 2019).

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