Very often may not fall exactly perpendicular discharges, and thus could be explained a variety of elliptical shapes, as well as half-moons and semicircles.
Napakaluwag Kadalasan ay maaaring hindi mahulog eksakto discharges patayo, at sa gayon ay ma-Ipinaliwanag ng iba't-ibang mga elliptical hugis, pati na rin ang kalahating-buwan at semicircles.