To be compatible with what we already have done with OMEGA and PFS data: leave the Nbins everywhere - For NOMAD, it will be always =1 if Nbins = 1: no need to use 2D (3D) matrices; for example AOTFFrequency will be a 1-column matrix (vector) of length Nspectra	All dimensions are of the following: [Number of spectra] x [Number of bins] x [Number of pixels]	(1 subdomain, 1 detector bin) = 1 spectrum !! For SO and LNO: Nbins = 1; and  Nspectra = [Nb_observationsx Nb_Detector Bins]	for UVIS : Nbins = 1;  Nspectra = Nb_observations
Dataset	Description	Dimension	SO/LNO Example	UVIS Example	Notes
Bins	Start and end rows of each bin in the spectrum	[Nspectra x Nbins] x [2]	[116,119],[120,123],….	[0,15] for UVIS full frame. [vstart,end] for binned spectrum
X	X values	[Nspectra x Nbins] x [YNb]	2100.00, 2100.20, 2100.40cm-1	200,201,202nm
XUnitFlag	Unit of X axis. 0 = pixel, 1 = cm-1, 2 = nm, 3 = um, 4 = Relative cm-1 (used in SOIR)	[Nspectra x Nbins]	0	0
Y	Y values for the full reconstructed detector frame	Nspectra x Npixels_vertical x Npixels_horizontal	e.g. detector pixel DNs, 320x256	e.g. detector pixel DNs
YError	Error on Y values	[Nspectra x Nbins] x [YNb]	Detector pixel DNs error	Detector pixel DNs error
YErrorFlag	Flag indicating if and what kind of error is supplied. =0 : no error given  (YErrorNb =0), =1 : only one value of noise for all data points (YErrorNb =1), =2 : one value of noise for each Y value (YErrorNb = YNb)	[Nspectra x Nbins]	0	0
YNb	Number of data points	[Nspectra x Nbins]	320	1048
YTypeFlag	Type of Y values. 0 = raw DN (digital number), 1 = radiance, 2 = transmittance, 3 = radiance factor	[Nspectra x Nbins]	0	0
YUnitFlag	Units of Y axis. 0 = uncalibrated, 1 = none (but calibrated), 2 = W/cm2/Sr/cm-1, 3 = Brightness Temperature (K), 4=W/m2/Sr/nm	[Nspectra x Nbins]	0	0
Y	Y values for each bin	[Nspectra x Nbins] x [YNb]	Detector pixel DNs	Detector pixel DNs