/** Standard distributed data header **/

 struct units_text 
   {
   char   text[40] ;                    /* Description of data field         */ 
   } ;

 struct describe_text 
   {
   char   text[80] ;                    /* Description of data field         */ 
   } ;

 struct std_hdr 
   {
   char   filename[80] ;                /* Name of file                      */ 
   char   satellite[20] ;               /* Name of satellite                 */ 
   char   sensor[20] ;                  /* Name of sensor                    */ 
   short  satid ;                       /* Satellite ID                      */
   short  fields ;                      /* Number of (lo-res) fields         */ 
   short  pixperscan ;                  /* Pixels per (lo-res) scanline      */ 
   short  hifields ;                    /* Number of hi-res fields           */ 
   short  hipixperscan ;                /* Number of hi-res pixels per scan  */ 
   short  missing_val ;                 /* Value for missing data            */
   float *scale ;                       /* Scaling factor for each field     */ 
   float *offset ;                      /* Offset value for each field       */
   struct units_text *units ;           /* Units for each field              */
   struct describe_text *description ;  /* Description for each field        */
   } ;


/** Standard distributed scanline pixel data (stored in arrays) **/

 struct std_data 
   {
   long   *itime ;        /* Time in seconds since 1-1-1970       */
   float  *lat ;          /* Decimal degs latitude                */
   float  *lng ;          /* Decimal degs longitude               */
   float **fielddata ;    /* Data, dimensions [fields][pixels]    */  
   } ;