Table 8: Total molecular column densities towards the SW and NE absorption.
$\mu$ S_ul g_u A_ul E_J,low Q(5.14 K) $\mathcal{N}_{SW}$ $\mathcal{N}_{NE}$

(Debye) (10^-4 s^-1) (K) (10¹² cm^-2) (10¹² cm^-2)

HCO⁺ 3.90 2 5 4.02 4.3 2.77 300 (23) 11.4 (0.1)

H¹³CO⁺ 3.90 2 5 3.70 4.2 2.83 11.1 (0.2) $\leq$ 0.25

HC¹⁸O⁺ 3.90 2 5 3.50 4.1 2.88 5.1 (0.3) -

HC¹⁷O⁺ 0.4 (0.1) -

HCN 2.99 2 5 2.32 4.3 2.78 289 (25) 12.3 (0.7)

H¹³CN 2.99 2 5 2.14 4.1 2.84 10.7 (0.5) $\leq$ 0.5

HC¹⁵N 2.99 2 5 2.13 4.1 2.85 2.1 (0.1) -

HNC 3.05 2 5 2.58 4.4 2.73 129.0 (0.5) 3.7 (0.2)

HN¹³C 4.8 (0.4) -

H¹⁵NC 1.0 (0.2) -

DNC 3.05 2 5 1.54 3.7 3.17 $\leq$ 0.7 -

CS 1.96 4 9 1.50 14.1 4.72 560 (7) 13 (4)

C³⁴S 1.96 4 9 1.42 13.9 4.79 53 (4) -

H₂S 0.97 4.5 9 0.26 19.8 1.28 1104 (15) $\leq$ 17

H₂³⁴S 110 (11) -

**Table 8:** Total molecular column densities towards the SW and NE absorption.
	$\mu$	S_ul	g_u	A_ul	E_J,low	Q(5.14 K)	$\mathcal{N}_{SW}$	$\mathcal{N}_{NE}$
	(Debye)			(10^-4 s^-1)	(K)		(10¹² cm^-2)	(10¹² cm^-2)
HCO⁺	3.90	2	5	4.02	4.3	2.77	300 (23)	11.4 (0.1)
H¹³CO⁺	3.90	2	5	3.70	4.2	2.83	11.1 (0.2)	$\leq$ 0.25
HC¹⁸O⁺	3.90	2	5	3.50	4.1	2.88	5.1 (0.3)	-
HC¹⁷O⁺							0.4 (0.1)	-
HCN	2.99	2	5	2.32	4.3	2.78	289 (25)	12.3 (0.7)
H¹³CN	2.99	2	5	2.14	4.1	2.84	10.7 (0.5)	$\leq$ 0.5
HC¹⁵N	2.99	2	5	2.13	4.1	2.85	2.1 (0.1)	-
HNC	3.05	2	5	2.58	4.4	2.73	129.0 (0.5)	3.7 (0.2)
HN¹³C							4.8 (0.4)	-
H¹⁵NC							1.0 (0.2)	-
DNC	3.05	2	5	1.54	3.7	3.17	$\leq$ 0.7	-
CS	1.96	4	9	1.50	14.1	4.72	560 (7)	13 (4)
C³⁴S	1.96	4	9	1.42	13.9	4.79	53 (4)	-
H₂S	0.97	4.5	9	0.26	19.8	1.28	1104 (15)	$\leq$ 17
H₂³⁴S							110 (11)	-

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