[b1_ana] In addition

[O. A. Rondon]

Hi Dustin,

Since P_zz and P_z are related, at least for P_zz>0, the error dP_zz for
given P_z, dP_z can be obtained analytically. I get

dP_zz/P_zz = 3*(dP_z/P_z)*P_z^2/[P_zz*(2 - P_zz)].

for the conservative ND3 P_z = 0.45, dP_z/P_z = 3%, I get dP_zz/P_zz = 6.3%.

Cheers,

Oscar