Extended Data Fig. 1: Variations of the observing conditions during transit epochs 1 and 2.
From: Nightside condensation of iron in an ultrahot giant exoplanet

a–c, Epoch 1. d–f, Epoch 2. The seeing (a, d), signal-to-noise ratio per pixel at 550 nm (b, e) and airmass (c, f) are shown as a function of the time in transit. Vertical dotted lines represent the transit contacts. The horizontal dashed lines in c and f indicate the airmass of 2.2 beyond which the data are discarded from the analysis.