Table 1: Wavelength ranges of the positive - and negative bands of the indices, with the associated errors.
Index + Range [Å] - Range [Å] ${\rm\sigma_{index}}$

Continuum index 6320-6520 4500-4800 0.23

6600-6700

4000 Å break 4010-4060 3900-3950 0.03

H+K(Ca) 3905-3920 3923-3942 0.05

3942.5-3956

H ${\delta}$ 4055-4072 4073-4095.25 0.04

4120-4145 4106.5-4119

Fe4531 4498-4517 4521-4559.5 0.04

4560-4573

Mg_b 5153-5161.5 5162-5193.5 0.05

5194-5203.5

**Table 1:** Wavelength ranges of the positive - and negative bands of the indices, with the associated errors.
Index	+ Range [Å]	- Range [Å]	${\rm\sigma_{index}}$
Continuum index	6320-6520	4500-4800	0.23
	6600-6700
4000 Å break	4010-4060	3900-3950	0.03
H+K(Ca)	3905-3920	3923-3942	0.05
	3942.5-3956
H ${\delta}$	4055-4072	4073-4095.25	0.04
	4120-4145	4106.5-4119
Fe4531	4498-4517	4521-4559.5	0.04
	4560-4573
Mg_b	5153-5161.5	5162-5193.5	0.05
	5194-5203.5

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