In the Buhlmann decompression algorithm, in Compartment one, with a half-time N2 of four minutes, an N2"a" value of 1.2599, and an N2"b" value of .5050; with a hlaf time He of one pont five minutes, the He "a" value is 1.7435 and the He "b" value is .1911.
1 4 1.2599 0.5050 1.5 1.7435 0.1911 
