Contour plot of log(counts) on a polar log(Energy)−log(Energy) diagram for the time period 0500−0600 UT on August 25, 2014. The top (Sun) segments 7−11 indicate the 1−20 keV nano-dust population arriving from the approximate direction of the Sun canted away in the direction of the orbital motion of comet 67P. At the bottom (67P) segments 0−14 are the ~200−500 eV negative particles. The polar plot indicates the arrival angles of the particles in the instrument frame of reference (Burch et al. 2015).