????? ?? ???? ?? ??????? ????? ??? ?? ??? ????? ????? ????? ????? ????? ?? ?????? ?? ???? ?????? ? ????? ????? ??‌??? ?? ?? ???????? ??????? ????? ???? ????? ?? ?? ??? ???? ? ???? ??? ?????? ???? ???? ???. For Resmed devices it truly is measured in litres for every second - I feel. I&