Estimated minimum number of transits required for decisive evidence (﹩{\mathrm{log}}_{10}B\,\geqslant \,2.0﹩) of each gas with ANDES within our framework. Planets are ordered from top to bottom by (i) number of detectable molecules, and (ii) smaller total required transits (sum over detected molecules). Empty cells indicate that a decisive detection cannot be achieved in 100 transits under the assumptions adopted here. The number in parentheses gives the approximate equivalent observing time in 7 hr nights, rounded up to the nearest integer, and represents idealized time only; it does not include weather or seasonal constraints.