BEGIN   {
	    printf("SPEED   DIR   RAWSP  RDIR   CO   VANE RDIR-DIR SAMPLES\n");
	}

(! /^#/ ) {
	    if ( $18 > 0.4 )
	    {
		speed += $18;
		dir += $19;
		rawsp += $25;
		rawdir += $24;
		compass += $22;
		vane += $23;
		diff = $24 - $19;
		if ( diff > 180. )
		    diff -= 360.;
		if ( diff < -180. )
		    diff += 360.;
		dirdiff += diff;
		samples++;
	    }
	}

END     {
	    printf("%6.3f %5.1f %6.3f %5.1f %5.1f %5.1f  %5.1f   %3d\n",
		speed/samples, dir/samples, rawsp/samples, rawdir/samples,
		compass/samples, vane/samples, dirdiff/samples, samples);
        }