Table 2: Heliocentric corrected radial velocities v (km $\ensuremath {\rm {s}^{-1}}$ ), Doppler widths b (km $\ensuremath {\rm {s}^{-1}}$ ) and column densities N (cm^-2) have been derived with VPFIT for Ca I, CH⁺ and CH transitions toward SN2006X. 1 $\sigma$ rms-errors are given in parenthesis. CH at phase +61 is not well constrained (low S/N) but consistent with earlier phases. Contamination in CH⁺ (4232 Å) at phase -2 and strong noise in CH⁺ (3957 Å) at phase +14 made it impossible to properly constrain fits to this lines. Straightforward peak velocity and strength measurements do however agree with the other two transitions. For the CN R(0) transitions v is 1645 and 1647 km $\ensuremath {\rm {s}^{-1}}$ at phase -2 and +14, respectively.
Transition Phase v b log N

(days) (km $\ensuremath {\rm {s}^{-1}}$ ) (km $\ensuremath {\rm {s}^{-1}}$ ) (cm^-2)

Ca I -2 1641 (2) 2 (2) 10.8 (0.2)

+14 1643 (1) 1 (1) 10.8 (0.2)

CH⁺ -2 1647 (1) 4 (2) 13.7 (0.1)

+14 1651 (1) 3 (2) 13.6 (0.1)

CH -2 1645 (1) 4 (1) 13.78 (0.03)

+14 1647 (1) 2 (1) 13.8 (0.3)

+61 1648 (2) 2 (2) 13.8 (0.2)

**Table 2:** Heliocentric corrected radial velocities v (km $\ensuremath {\rm {s}^{-1}}$ ), Doppler widths b (km $\ensuremath {\rm {s}^{-1}}$ ) and column densities N (cm^-2) have been derived with VPFIT for Ca I, CH⁺ and CH transitions toward SN2006X. 1 $\sigma$ rms-errors are given in parenthesis. CH at phase +61 is not well constrained (low S/N) but consistent with earlier phases. Contamination in CH⁺ (4232 Å) at phase -2 and strong noise in CH⁺ (3957 Å) at phase +14 made it impossible to properly constrain fits to this lines. Straightforward peak velocity and strength measurements do however agree with the other two transitions. For the CN R(0) transitions v is 1645 and 1647 km $\ensuremath {\rm {s}^{-1}}$ at phase -2 and +14, respectively.
Transition	Phase	v	b	log N
	(days)	(km $\ensuremath {\rm {s}^{-1}}$ )	(km $\ensuremath {\rm {s}^{-1}}$ )	(cm^-2)
Ca I	-2	1641 (2)	2 (2)	10.8	(0.2)
	+14	1643 (1)	1 (1)	10.8	(0.2)
CH⁺	-2	1647 (1)	4 (2)	13.7	(0.1)
	+14	1651 (1)	3 (2)	13.6	(0.1)
CH	-2	1645 (1)	4 (1)	13.78	(0.03)
	+14	1647 (1)	2 (1)	13.8	(0.3)
	+61	1648 (2)	2 (2)	13.8	(0.2)

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