Table 3: Averaged warm absorber parameters for the sources in Table 2: object name, range in log ionisation parameter ( $\Delta$ log $\xi$ ; erg s $^{\rm -1}$ ), log total equivalent hydrogen column (log $N_{\rm Htot}$ ; cm $^{\rm -2}$ ), log weighted average ionisation parameter (log $\xi$ $_{\rm avg}$ ; erg s $^{\rm -1}$ ), weighted average outflow velocity ( $v_{\rm avg}$ ; km s $^{\rm -1}$ ).
Object $\Delta$ log $\xi$ log $N_{\rm Htot}$ log $\xi$ $_{\rm avg}$ $v_{\rm avg}$

MR2251-178 2.22 21.54 2.87 250

PG 0844+349 0 23.6 3.7 63 000

PG 1211+143 4.3 23.77 3.39 24 000

IRAS 13349+2438 2.25 22.34 2.21 30

NGC 4593 2.11 21.82 2.54 204

NGC 3783 1.8 22.58 2.68 750

Markarian 509 0 21.3 1.76 200

NGC 7469 4 20.60 2.1 800

NGC 3516 0 21.9 0.78 200

NGC 5548 2.29 21.92 2.51 362

MCG -6-30-15 1.25 21.60 2.22 1025

Markarian 766 unknown 21.2 0.7 0

NGC 4051 no info 21 1.4 402

Ark 564 2 21.30 1.70 150

**Table 3:** Averaged warm absorber parameters for the sources in Table 2: object name, range in log ionisation parameter ( $\Delta$ log $\xi$ ; erg s $^{\rm -1}$ ), log total equivalent hydrogen column (log $N_{\rm Htot}$ ; cm $^{\rm -2}$ ), log weighted average ionisation parameter (log $\xi$ $_{\rm avg}$ ; erg s $^{\rm -1}$ ), weighted average outflow velocity ( $v_{\rm avg}$ ; km s $^{\rm -1}$ ).
Object	$\Delta$ log $\xi$	log $N_{\rm Htot}$	log $\xi$ $_{\rm avg}$	$v_{\rm avg}$
MR2251-178	2.22	21.54	2.87	250
PG 0844+349	0	23.6	3.7	63 000
PG 1211+143	4.3	23.77	3.39	24 000
IRAS 13349+2438	2.25	22.34	2.21	30
NGC 4593	2.11	21.82	2.54	204
NGC 3783	1.8	22.58	2.68	750
Markarian 509	0	21.3	1.76	200
NGC 7469	4	20.60	2.1	800
NGC 3516	0	21.9	0.78	200
NGC 5548	2.29	21.92	2.51	362
MCG -6-30-15	1.25	21.60	2.22	1025
Markarian 766	unknown	21.2	0.7	0
NGC 4051	no info	21	1.4	402
Ark 564	2	21.30	1.70	150

Source LaTeX | All tables | In the text

	1 Introduction
	2 Data and analysis
	3 Results and discussion
	4 Conclusions
	References