Global maps of iron sensitive parameters derived using Eq. (1) compared with the iron sensitive parameter of Lucey et al. (2000b). The maps have been derived at spatial resolution of 1.5 km at equatorial region. The data gaps are shown in black color in M³ derived iron sensitive parameters and in white color in Clementine derived iron sensitive parameter. (a) A1 parameter; (b) A2 parameter; (c) the angular iron sensitive parameter derived using Eq. (C.1). It should be noted that the iron sensitive parameters derived in this work and from Lucey et al. (2000b) do not belong to the same coordinate space. For comparison purpose we have plotted here − θ_Fe.