Prime Keys are:
	CarrRot
	LonHG
	LatHG
	LonCM
DB Index Keys are:
	CarrRot
	LonHG
	LatHG
	LonCM
All Keywords for series mdi.hmi_rdVpspec16:
	CarrRot   	(int)	Carrington rotation at MidTime
	LonHG     	(float)	Longitude of tracked region center
	LatHG     	(float)	Latitude of tracked region center
	LonCM     	(float)	CM Longitude of region center at MidTime
	MidTime   	(time)	Midpoint of tracking interval for AR
	LonSpan   	(float)	Span of tracking interval
	start     	(time)	Start of tracking interval
	stop      	(time)	End of tracking interval
	coverage  	(float)	Valid data coverage: valid / (valid + interp)
	CDELT1    	(float)	WCS coordinate increment at reference point value
	CDELT2    	(float)	WCS coordinate increment at reference point value
	CDELT3    	(float)	WCS coordinate increment at reference point value
	DataMin   	(float)	log (data minimum)
	DataMax   	(float)	log (data maximum)
	Delta_k   	(float)	wavenumber step size
	Delta_nu  	(float)	frequency step size
	D_omega   	(float)	radial frequency step size
	apode_k_min	(float)	inner radius of k apodization annulus
	apode_k_max	(float)	outer radius of k apodization annulus
	apode_f   	(float)	temporal apodization edge
	bscale_000	(double)	data scaling multiplier
	bzero_000 	(double)	data scaling offset
	Cadence   	(float)	Temporal image cadence
	Duration  	(int)	Length of tracking interval
	Size      	(float)	Diameter of tracked region
	Scale     	(float)	Map scale
	ZRate     	(float)	Zonal tracking rate wrt Carrington
	MRate     	(float)	Meridional tracking rate
	MapProj   	(string)	Map projection
	PosAng    	(float)	Position angle of Carrington north wrt axis 2
	Log_Base  	(double)	Logarithmic base for power data
	CRPIX1    	(float)	WCS reference pixel location
	CRPIX2    	(float)	WCS reference pixel location
	CRPIX3    	(float)	WCS reference pixel location
	CRVAL1    	(float)	WCS reference point value
	CRVAL2    	(float)	WCS reference point value
	CRVAL3    	(float)	WCS reference point value
Segments for series mdi.hmi_rdVpspec16:
	power     	    m/s	   fits	256x256x832	Power Spectrum