Prime Keys are:
T_START is slotted 'ts_slot' using T_START_index
LMIN
LMAX
NDT
DB Index Keys are:
T_START_index
LMIN
LMAX
NDT
All Keywords for series hmi.V_sht_gf_72d:
T_START (time) beginning of time period
T_START_step (float) T_START step, =1d
T_START_unit (string) T_START step unit
T_START_epoch (time) beginning of slot 0 (MDI epoch)
T_START_round (float) = T_STEP
LMIN (int) minimum spherical harmonic degree
LMAX (int) maximum spherical harmonic degree
NDT (int) number of points in timeseries
T_STOP (time) beginning of following time period
T_OBS (time) midpoint of timeseries, =(T_START+T_STOP)/2
DATE (time) time the record was last updated, ISO format
QUALITY (int) bitfield specifying various aspects of data quality, see ???
MAPMMAX (int) maximum m for remapping dopplergrams
SINBDIVS (int) number of increments in sin latitude for remapping dopplergrams
MFLIPPED (int) sign convention for m: 0 for MDI, 1 for GONG
T_STEP (float) time step
TELESCOP (string) source telescope for data, SDO=Solar Dynamics Observatory
INSTRUME (string) source instrument, HMI=Helioseismic and Magnetic Imager
ORIGIN (string) location of data processing, JSOC=Joint Science Operations Center, at Stanford
WAVELNTH (int) wavelength of observation, 6173.3 Angstroms, Fe I photospheric absorption line
VERSION (string) version of data, used for retrieving obsolete versions
CALVER64 (longlong) calibration version
Segments for series hmi.V_sht_gf_72d:
data m/s fits VARxVAR spherical harmonic timeseries
Links for series hmi.V_sht_gf_72d:
HISTORY STATIC hmi.globalhs_history processing history
SRCDATA STATIC hmi.V_sht_72d input data