netcdf sensor {
types:

  opaque(11) raw_obs_t ;  // opaque 11-byte raw sensor data

dimensions:
	time = 5 ;
variables:

	raw_obs_t raw_obs(time) ;
		raw_obs_t raw_obs:_FillValue = 0XCAFEBABECAFEBABECAFEBA ;

data:

 raw_obs = 0X0102030405060708090A0B, 0XAABBCCDDEEFFEEDDCCBBAA, 
    0XFFFFFFFFFFFFFFFFFFFFFF, _, 0XCF0DEFACED0CAFE0FACADE ;
}