Cristal plan de type secteur (P1d selon la classification de Nakaya (1954) ; P1b selon la classification de Magono and Lee (1966) et P2a selon la classification de Kikuchi et al. (2013))
Snow crystal, plan, with sectorlike branches (P1d-type in Nakaya classification (1954) ; P1b-type in Magono and Lee classification (1966) and P2a-type in Kikuchi et al. global classification of snow crystals, ice crystals, and other solid precipitation (2013)).