UM512
Subroutine UM512  set the GSFC 12/66 model coefficients
REAL*8 tm
CHARACTER*32 lbl
CALL UM512 (tm, lbl)

tm

Epoch of the geomagnetic field calculation expressed in year [in]

lbl

Label of the geomagnetic field model [out]
The subroutine UM512 initializes the expansion coefficients of
the geomagnetic field inside the common block UC140
with the coefficients of the GSFC 12/66 model.
The tm
arguments specifies the epoch to which the model
has to be extrapolated. The base epoch of the GSFC 12/66 model is 1960.
As result, the lbl
argument contains a string with the
name of the model.
UC140,
magnetic field description
Called by
UM510,
select a geomagnetic field model
Calls
UM515,
perform a Schmidt normalisation
UM511,
set the Jensen & Cain 1960 model coefficients
UM513,
set the DGRF/IGRF model coefficients