m
0100 m
%
0% (no He)100%
Equivalent Narcotic Depth
22.5 m
Equivalent to breathing air at 22.5 m
≤ 30 m, within limits 30–40 m / 100–130 ft, caution > 40 m, exceeds limit
Depth 40 m
Helium 35%
Nitrogen + O₂ 65%
END 22.5 m
Equivalent Narcotic Depth
Equivalent to breathing air at 22.5 m