Table 2: Dependences of $\ensuremath {R_{I}^{(2)}(\lambda _I)}$ : least-square fit parameters (without constant term).
HD Ion n a₁ $\sigma(a_1)$ a₂ $\sigma(a_2)$ a₃ $\sigma(a_3)$ 10³ rms

$[({\rm km~s}^{-1})^2]$ $[{\rm G}^2]$ $[10^6~({\rm km}~{\rm s}^{-1}~ \mbox{\rm\AA}^{-1})^4 ]$ $[\mbox{\rm\AA}^2 ]$

47103 Fe I 30 25.09 15.15 $3.740\times10^8$ $0.276\times10^8$ 3.790 0.563 3.551

Fe II 22 21.14 23.03 $4.026\times10^8$ $0.270\times10^8$ 2.789 0.454 3.416

Cr II 15 -66.32 78.17 $3.902\times10^8$ $0.429\times10^8$ 4.122 1.480 6.107

81009 Fe I 56 46.92 17.13 $9.654\times10^7$ $0.861\times10^7$ 5.988 1.008 2.834

Cr II 21 137.97 20.10 $6.025\times10^7$ $1.339\times10^7$ 3.405 1.249 1.957

91375 Fe I 122 91.33 3.23 $1.881\times10^6$ $1.172\times10^6$ 5.980 0.382 0.684

Fe II 58 140.32 8.50 - $7.433\times10^6$ $2.816\times10^6$ 3.133 0.417 1.144

94660 Fe II 92 77.24 9.23 $3.901\times10^7$ $0.308\times10^7$ 2.870 0.358 1.736

Cr II 91 52.89 6.39 $4.284\times10^7$ $0.298\times10^7$ 2.792 0.279 1.396

96446 N II 24 136.57 18.17 $4.247\times10^7$ $0.982\times10^7$ - - 2.106

O II 47 175.16 13.03 $3.680\times10^7$ $0.772\times10^7$ - - 1.805

116114 Fe I 89 44.65 7.17 $5.123\times10^7$ $0.273\times10^7$ 2.797 0.219 1.401

Cr II 28 70.12 10.84 $5.106\times10^7$ $0.440\times10^7$ 1.645 0.583 1.225

116458 Fe I 33 37.02 11.31 $3.798\times10^7$ $0.548\times10^7$ 2.082 0.981 0.949

Fe II 83 64.99 6.36 $2.224\times10^7$ $0.204\times10^7$ 2.182 0.384 0.995

Cr II 88 58.55 6.22 $3.131\times10^7$ $0.284\times10^7$ 4.347 0.554 1.369

133792 Fe I 144 35.67 1.98 $1.345\times10^6$ $0.539\times10^6$ 2.709 0.265 0.492

Cr II 83 40.17 2.44 - $8.624\times10^5$ $6.435\times10^5$ 2.328 0.217 0.511

137949 Fe I 53 52.75 9.36 $2.456\times10^7$ $0.409\times10^7$ 4.175 0.651 1.632

Cr II 19 84.13 13.82 $1.523\times10^7$ $0.749\times10^7$ 4.559 0.966 1.382

**Table 2:** Dependences of $\ensuremath {R_{I}^{(2)}(\lambda _I)}$ : least-square fit parameters (without constant term).
HD	Ion	n	a₁	$\sigma(a_1)$	a₂	$\sigma(a_2)$	a₃	$\sigma(a_3)$	10³ rms
			$[({\rm km~s}^{-1})^2]$	$[{\rm G}^2]$	$[10^6~({\rm km}~{\rm s}^{-1}~ \mbox{\rm\AA}^{-1})^4 ]$	$[\mbox{\rm\AA}^2 ]$
47103	Fe I	30	25.09	15.15	$3.740\times10^8$	$0.276\times10^8$	3.790	0.563	3.551
	Fe II	22	21.14	23.03	$4.026\times10^8$	$0.270\times10^8$	2.789	0.454	3.416
	Cr II	15	-66.32	78.17	$3.902\times10^8$	$0.429\times10^8$	4.122	1.480	6.107
81009	Fe I	56	46.92	17.13	$9.654\times10^7$	$0.861\times10^7$	5.988	1.008	2.834
	Cr II	21	137.97	20.10	$6.025\times10^7$	$1.339\times10^7$	3.405	1.249	1.957
91375	Fe I	122	91.33	3.23	$1.881\times10^6$	$1.172\times10^6$	5.980	0.382	0.684
	Fe II	58	140.32	8.50	- $7.433\times10^6$	$2.816\times10^6$	3.133	0.417	1.144
94660	Fe II	92	77.24	9.23	$3.901\times10^7$	$0.308\times10^7$	2.870	0.358	1.736
	Cr II	91	52.89	6.39	$4.284\times10^7$	$0.298\times10^7$	2.792	0.279	1.396
96446	N II	24	136.57	18.17	$4.247\times10^7$	$0.982\times10^7$	-	-	2.106
	O II	47	175.16	13.03	$3.680\times10^7$	$0.772\times10^7$	-	-	1.805
116114	Fe I	89	44.65	7.17	$5.123\times10^7$	$0.273\times10^7$	2.797	0.219	1.401
	Cr II	28	70.12	10.84	$5.106\times10^7$	$0.440\times10^7$	1.645	0.583	1.225
116458	Fe I	33	37.02	11.31	$3.798\times10^7$	$0.548\times10^7$	2.082	0.981	0.949
	Fe II	83	64.99	6.36	$2.224\times10^7$	$0.204\times10^7$	2.182	0.384	0.995
	Cr II	88	58.55	6.22	$3.131\times10^7$	$0.284\times10^7$	4.347	0.554	1.369
133792	Fe I	144	35.67	1.98	$1.345\times10^6$	$0.539\times10^6$	2.709	0.265	0.492
	Cr II	83	40.17	2.44	- $8.624\times10^5$	$6.435\times10^5$	2.328	0.217	0.511
137949	Fe I	53	52.75	9.36	$2.456\times10^7$	$0.409\times10^7$	4.175	0.651	1.632
	Cr II	19	84.13	13.82	$1.523\times10^7$	$0.749\times10^7$	4.559	0.966	1.382

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