Table 1
Observation log.
| Date | Retained spectra (a) | Exp. time [s] | Airmass (b) | Seeing | S/N order 56 | |
|---|---|---|---|---|---|---|
| Night one | 2017 February 28 | 23 (7/16 (c) | 500 | 1.4-1.1-1.4 | – | 40–50 |
| Night two | 2017 March 20 | 33 (16/16) (d) | 600,500 | 1.9-1.1-1.5 | 0.7–1.1 | 35–48 |
| Night three | 2018 February 13 | 15 (8/6) (e) | 900 | 1.2-1.1-1.8 | 0.8–1.2 | 35–55 |
| Night four | 2018 March 31 | 33 (13/18) (f) | 600 | 1.5-1.1-2.7 | 0.5–1.0 | 42–56 |
Notes. (a) In parentheses: spectra in and out of transit, respectively. (b)Airmass at the beginning, centre, and end of transit. (c)Observed: 37 exposures. Partial transit. (d)Observed: 45 exposures. (e)Observed: 24 exposures. Partial transit, rejected from the analysis for insufficient out-of-transit baseline. (f) Observed: 42 exposures.
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