esis.flights.f1.spectrum.Si_IV.fwhm

esis.flights.f1.spectrum.Si_IV.fwhm = <Quantity 0.151 Angstrom>

Average quiet-sun full width at half maximum, measured from the median spectral profile of an IRIS raster. The median is used rather than the mean so that the value is not biased by the bright, broad profiles of transient events.