ElementContentsecCodes keys
1Data representation type (see WMO code table 6) = 0
2Number of points along a parallel (Ni).

Ni
Nx

3Number of points along a meridian (Nj).

Nj
Ny

4Latitude of the first grid point.
latitudeOfFirstGridPointInDegrees*1000
5Longitude of the first grid point.
longitudeOfFirstGridPointInDegrees*1000
6
Resolution flag:
 0    Direction increments not given. 
 128  Direction increments given.
ijDirectionIncrementGiven*128
7Latitude of the last grid point.
latitudeOfLastGridPointInDegrees*1000
8Longitude of the last grid point.
longitudeOfLastGridPointInDegrees*1000
9i direction increment.
iDirectionIncrementInDegrees*1000
10j direction increment.
jDirectionIncrementInDegrees*1000
11Scanning mode flags (see WMO code table 8)

iScansNegatively

jScansNegatively

jPointsAreConsecutive


12Number of vertical coordinate parameters.
NV
13Latitude of the southern pole of rotation.
latitudeOfSouthernPoleInDegrees*1000
14Longitude of the southern pole of rotation.
longitudeOfSouthernPoleInDegrees*1000
15Latitude of the pole of stretching.
latitudeOfPoleOfStretchingInDegrees *1000
16Longitude of the pole of stretching.
longitudeOfPoleOfStretchingInDegrees *1000
17
0  Regular grid.
1  Quasi-regular (reduced) grid.
At the moment, quasi-regular (reduced) latitude/longitude grids are
not unambiguously defined. The resolution flag field indicates whether
or not both direction increments are given; at least one must be given,
as grids are only allowed to be irregular in one direction.
18
Earth flag:
 0   Earth assumed spherical with radius 6367.47 km.
 64  Earth assumed oblate spheroidal with size as determined by IAU in 1965:
       6378.160km,   6356.775km,   f=1/297.0
earthIsOblate
19
Components flag:
 0  Resolved u and v components of vector quantities relative to easterly
    and northerly directions.
 8  Resolved u and v components of vector quantities relative to the
    defined grid in the direction of increasing x and y (or i and j)
    coordinates respectively.
uvRelativeToGrid
20-22Reserved. Set to 0.
23-nn
For a quasi-regular (reduced) grid, the number of points along each parallel
must be defined. The number of parallels is given by Nj above.
Alternatively, this may be the number of pointqs along each meridian, where
the number of meridians is given by Ni above.q
pl