table_3_1 = {
'0':'Latitude/Longitude (See Template 3.0) Also called Equidistant Cylindrical or Plate Caree',
'1':'Rotated Latitude/Longitude (See Template 3.1)',
'2':'Stretched Latitude/Longitude (See Template 3.2)',
'3':'Rotated and Stretched Latitude/Longitude (See Template 3.3)',
'4':'Variable Resolution Latitude/longitude  (See Template 3.4)',
'5':'Variable Resolution Rotated Latitude/longitude  (See Template 3.5)',
'6-9':'Reserved',
'10':'Mercator (See Template 3.10)',
'11':'Reserved',
'12':'Transverse Mercator  (See Template 3.12)',
'13':'Mercator with modelling subdomains definition  (See Template 3.13)',
'14-19':'Reserved',
'20':'Polar Stereographic Projection (Can be North or South) (See Template 3.20)',
'21-22':'Reserved',
'23':'Polar Stereographic with modelling subdomains definition  (See Template 3.23)',
'24-29':'Reserved',
'30':'Lambert Conformal (Can be Secant, Tangent, Conical, or Bipolar) (See Template 3.30)',
'31':'Albers Equal Area (See Template 3.31)',
'32':'Reserved',
'33':'Lambert conformal with modelling subdomains definition  (See Template 3.33)',
'34-39':'Reserved',
'40':'Gaussian Latitude/Longitude (See  Template 3.40)',
'41':'Rotated Gaussian Latitude/Longitude (See Template 3.41)',
'42':'Stretched Gaussian Latitude/Longitude (See Template 3.42)',
'43':'Rotated and Stretched Gaussian Latitude/Longitude (See Template 3.43)',
'44-49':'Reserved',
'50':'Spherical Harmonic Coefficients (See Template 3.50)',
'51':'Rotated Spherical Harmonic Coefficients (See Template 3.51)',
'52':'Stretched Spherical Harmonic Coefficients (See Template 3.52)',
'53':'Rotated and Stretched Spherical Harmonic Coefficients (See Template 3.53)',
'54-59':'Reserved',
'60':'Cubed-Sphere Gnomonic  (See Template 3.60) Validation',
'61':'Spectral Mercator with modelling subdomains definition  (See Template 3.61)',
'62':'Spectral Polar Stereographic with modelling subdomains definition  (See Template 3.62)',
'63':'Spectral Lambert conformal with modelling subdomains definition  (See Template 3.63)',
'64-89':'Reserved',
'90':'Space View Perspective or Orthographic (See Template 3.90)',
'91-99':'Reserved',
'100':'Triangular Grid Based on an Icosahedron (See Template 3.100)',
'101':'General Unstructured Grid (see Template 3.101)',
'102-109':'Reserved',
'110':'Equatorial Azimuthal Equidistant Projection (See Template 3.110)',
'111-119':'Reserved',
'120':'Azimuth-Range Projection (See Template 3.120)',
'121-139':'Reserved',
'140':'Lambert Azimuthal Equal Area Projection  (See Template 3.140)',
'141-203':'Reserved',
'204':'Curvilinear Orthogonal Grids (See Template 3.204)',
'205-999':'Reserved',
'1000':'Cross Section Grid with Points Equally Spaced on the Horizontal (See Template 3.1000)',
'1001-1099':'Reserved',
'1100':'Hovmoller Diagram with Points Equally Spaced on the Horizontal (See Template 3.1100)',
'1101-1199':'Reserved',
'1200':'Time Section Grid (See Template 3.1200)',
'1201-32767':'Reserved',
'32768-65534':'Reserved for Local Use',
'32768':'Rotated Latitude/Longitude  (Arakawa Staggered E-Grid) (See Template 3.32768)',
'32769':'Rotated Latitude/Longitude  (Arakawa Non-E Staggered Grid) (See Template 3.32769)',
'65535':'Missing',
}

table_3_2 = {
'0':'Earth assumed spherical with radius = 6,367,470.0 m',
'1':'Earth assumed spherical with radius specified (in m) by data producer',
'2':'Earth assumed oblate spheriod with size as determined by IAU in 1965 (major axis = 6,378,160.0 m, minor axis = 6,356,775.0 m, f = 1/297.0)',
'3':'Earth assumed oblate spheriod with major and minor axes specified (in km) by data producer',
'4':'Earth assumed oblate spheriod as defined in IAG-GRS80 model (major axis = 6,378,137.0 m, minor axis = 6,356,752.314 m, f = 1/298.257222101)',
'5':'Earth assumed represented by WGS84 (as used by ICAO since 1998) (Uses IAG-GRS80 as a basis)',
'6':'Earth assumed spherical with radius = 6,371,229.0 m',
'7':'Earth assumed oblate spheroid with major and minor axes  specified (in m) by data producer',
'8':'Earth model assumed spherical with radius 6,371,200 m,  but the horizontal datum of the resulting Latitude/Longitude field is  the WGS84 reference frame',
'9':'Earth represented by the OSGB 1936 Datum,  using the Airy_1830 Spheroid, the Greenwich meridian as 0 Longitude, the Newlyn datum as mean sea  level, 0 height.',
'10-191':'Reserved',
'192-254':'Reserved for Local Use',
'255':'Missing',
}

earth_params = {
'0':{'shape':'spherical','radius':6367470.0},
'1':{'shape':'spherical','radius':None},
'2':{'shape':'oblateSpheriod','major_axis':6378160.0,'minor_axis':6356775.0,'flattening':1.0/297.0},
'3':{'shape':'oblateSpheriod','major_axis':None,'minor_axis':None,'flattening':None},
'4':{'shape':'oblateSpheriod','major_axis':6378137.0,'minor_axis':6356752.314,'flattening':1.0/298.257222101},
'5':{'shape':'oblateSpheriod','major_axis':6378137.0,'minor_axis':6356752.3142,'flattening':1.0/298.257223563},
'6':{'shape':'spherical','radius':6371229.0},
'7':{'shape':'oblateSpheriod','major_axis':None,'minor_axis':None,'flattening':None},
'8':{'shape':'spherical','radius':6371200.0},
}
for i in range(9,256):
    earth_params[str(i)] = {'shape':'unknown','radius':None}
