Narrow absorption lines from intervening material in supernovae - I. Measurements and temporal evolution

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Table 2

Number of SNe and spectra after various cuts.

Cut	SNe la		SNe II		SE SNe		SNe-int^(*)		Total		Comment
	N_SN	N_spec	N_SN	N_spec	N_SN	N_spec	N_SN	N_spec	N_SN	N_spec
None	1017	6397	327	2538	328	2053	116	1269	1788	12 257	–
ɀ > 0.004	988	5759	285	1890	303	1694	110	1177	1686	10 520	Sect. 5.1
S/N> 15	988	4171	285	1515	303	1099	110	834	1686	7619	Sect. 5.3
m_c < 0.002 Å⁻¹	701	2466	214	809	233	856	98	439	1246	4570	Sect. 5.4^(†)
N_sv > 1	400	2165	140	735	142	765	71	412	753	4077	Sect. 5.6

Notes.^(*) These include interacting SNe: SNe Πn, Ibn and Icn.^(†) Values for Na I D . The exact cuts and number of SNe/spectra changes according to line species.

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