In {TAIL ~ this manner}, {HEAD ~ the swivelled panel} 3 can be guided to follow the solar altitude 
In
In { TAIL ~ this manner } , { HEAD ~ the swivelled panel } 3 can be guided to follow the solar altitude
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH