?? ??? ???? ???? ???? ?? ??? ? ???? ? ?????? ?? ???? ? ???? ????? ? ??? ??? ?????? ???? ? ???? ?? ???? ????? ?? ???? ??? ? ???? ??? ??? ????? ???? . ???? ????? ???? ?? ???? ??? ???? / ?? ????? ????? ?? ?? ???? ??? ???? Before you begin noting your measurement, we'd like to determine the so