    typedef struct {
      int   month;  /* Begin time for this Cappi; month (1-12). */
      int   day;    /* Begin time for this Cappi; day (1-31). */
      int   year;   /* Begin time for this Cappi; year (eg. 1993). */
      int   hour;   /* Begin date for this Cappi; hour (0-23). */
      int   minute; /* Begin date for this Cappi; minute (0-59).*/
      float sec;    /* Begin date for this Cappi; second + fraction of  second. */
      float height;      /* Height for this Cappi. */
      float lat;
      float lon;         /* Lat/lon of lower left corner of Carpi. */
      int field_type;
      char radar_type[50]; /* Value of Constant radar->h.radar_type */
      int interp_method; /* ??? string describing interpolation method. */
      Er_loc *loc;       /* elevation and range coordinate array */
      Sweep *sweep;      /* Pointers to rays of data */
    } Cappi;