The expected errors on our transmission spectra from PandExo (N. E. Batalha et al. 2017) with the measured errors for both reductions for the individual visits (left) and combined spectra (right). We achieve markedly better precisions for visit 2 than for visit 1, likely owing to the lack of adequate pre-transit baseline for visit 1. We achieve median precisions for the Eureka! reductions for visit 1 of ∼39 ppm and ∼68 ppm and for visit 2 of ∼30 ppm and ∼51 ppm for NRS1 and NRS2 respectively. The precisions for the Tiberius reductions for visit 1 of ∼40 ppm and ∼72 ppm and for visit 2 of ∼31 ppm and ∼56 ppm for NRS1 and NRS2, respectively, are comparable to those of the Eureka! reduction.