Table 5: Stellar parameters and derived metallicities.
Star $T_{\rm eff}$ ${\log\; g}$ ${\rm [FeI/H]}$ ${\rm [FeII/H]}$ ${v_{\rm t} \rm (km~s^{-1})}$

Spectroscopic:

I-18 4800 2.3 +0.05 ( $\pm$ 0.072) -0.07 ( $\pm$ 0.08) 1.5

I-36 4300 1.8 -0.04 ( $\pm$ 0.073) -0.08 ( $\pm$ 0.10) 1.5

I-42 4200 1.6 -0.16 ( $\pm$ 0.075) - 1.3

Photometric:

I-18 4500 2.0 -0.05 ( $\pm$ 0.072) +0.18 ( $\pm$ 0.08) 1.3

I-36 4000 1.5 +0.00 ( $\pm$ 0.073) +0.35 ( $\pm$ 0.10) 1.5

I-42 4000 1.5 -0.19 ( $\pm$ 0.075) - 1.3

Ionization temperature:

I-18 4700 2.0 -0.05 ( $\pm$ 0.072) -0.11 ( $\pm$ 0.08) 1.5

I-36 4200 1.5 -0.13 ( $\pm$ 0.073) -0.09 ( $\pm$ 0.10) 1.5

I-42 4100 1.6 -0.14 ( $\pm$ 0.073) -0.08 ( $\pm$ 0.10) 1.2

**Table 5:** Stellar parameters and derived metallicities.
Star	$T_{\rm eff}$	${\log\; g}$	${\rm [FeI/H]}$	${\rm [FeII/H]}$	${v_{\rm t} \rm (km~s^{-1})}$
Spectroscopic:
I-18	4800	2.3	+0.05 ( $\pm$ 0.072)	-0.07 ( $\pm$ 0.08)	1.5
I-36	4300	1.8	-0.04 ( $\pm$ 0.073)	-0.08 ( $\pm$ 0.10)	1.5
I-42	4200	1.6	-0.16 ( $\pm$ 0.075)	-	1.3
Photometric:
I-18	4500	2.0	-0.05 ( $\pm$ 0.072)	+0.18 ( $\pm$ 0.08)	1.3
I-36	4000	1.5	+0.00 ( $\pm$ 0.073)	+0.35 ( $\pm$ 0.10)	1.5
I-42	4000	1.5	-0.19 ( $\pm$ 0.075)	-	1.3
Ionization temperature:
I-18	4700	2.0	-0.05 ( $\pm$ 0.072)	-0.11 ( $\pm$ 0.08)	1.5
I-36	4200	1.5	-0.13 ( $\pm$ 0.073)	-0.09 ( $\pm$ 0.10)	1.5
I-42	4100	1.6	-0.14 ( $\pm$ 0.073)	-0.08 ( $\pm$ 0.10)	1.2

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