Fig. 6
From: Capability of airline jets as an observation platform for noctilucent clouds at middle latitudes
Distribution of scattering angles of pixels with NLC features. The distribution of the number of pixels is normalized by the total number of pixels with NLC features for all eight events (see Table 1 and Fig. 3), and each event is plotted in a different color. Typical ranges of scattering angles sampled by the four AIM/CIPS cameras (PX, MX, PY, and MY) when the SZA has the highest value (90°–95°) are also indicated (see Fig. 6 of Lumpe et al. 2013)