Table 1

Available data for the individual nights.

Night Number of Total exposure S/N range
spectra [s]

2013-06-08 3 1360 243–296
2013-06-25 10 5260 273–351
2013-08-02 2 1092 145–151
2013-08-04 20 10 000 215–311
2013-09-05 4 2400 191–248
2013-09-09 13 7810 122–265
2013-09-30 38 17 100 179–388

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