Before revision:  Focusing on the three lowest-order multipoles -- the total charge, dipole, and quadrupole moment -- we show that the value of pH influences not only their magnitudes, but more notably  also the spatial orientation of their principal axes.
After revision:  Focusing on the three lowest-order multipoles -- the total charge, dipole, and quadrupole moment -- we show that the value of pH influences not only their magnitudes, but more notably and importantly also the spatial orientation of their principal axes.