netcdf synth5 {
types:
  compound G1_t {
    float temp(2, 2) ;
    int lat(2) ;
    int long(2) ;
  }; // G1_t
variables:
	G1_t G1 ;
data:

 G1 = {{1320, 2320, 3320, 4320}, {132, 232}, {332, 432}} ;
}