The present invention is a 5:2 carry-save-adder that receives the five input signals I0, I1, I2, I3 and I4 and computes the two output signals SUM and CARRY. The compositions can include advantageously high levels of the medium chain peroxycarboxylic acid, can be readily made, andor can exhibit reduced odor. For each of one or more transmitters in a second position determination sub-system, an \u201cexpected\u201d pseudo-range is computed based on the accurate position estimate for the terminal and the base station location, a \u201cmeasured\u201d pseudo-range is also obtained, and a pseudo-range residual is then determined based on the expected pseudo-range and the measured pseudo-range.