Table 3.

Column density retrieved for air pollutants in a $7\times 7$ square at the center of the gas cell. Values obtained by search in simulated spectra datacube (SSD) and in simulated PC datacube (SPCD).

Gas	Nominal Q (ppm)	Retrieved Q SSD (ppm)	Retrieved Q SPCD (ppm)
CH${}_4$	258	$237.9\pm 11.7$	$253.2\pm 7.6$
N${}_2$O	107.5	$113\pm 1.4$	$110.4\pm$ 3.4
C${}_3$H${}_8$	215	$199.1\pm 3.3$	$218.1\pm$ 7.4