A 4 cm. growth unit of measurement above the water surface of main-crop rice seedling, inhapna', or above the soil surface, of second-crop rice seedlings, binunbun.
One measure, penghan di puyu' is about 4 cm. above the water surface, leaves floating on the water surface, of main-crop seedlings, or above the soil surface, of second-crop rice seedlings rice. Two measures, pidwan di puyu' is about 8 cm. above water or soil surface.
For main-crop rice seedlings (theme ma-) to be above water level (loc ref), in a seedbed before transplanting.
mapyu'
Napyu' nan pāguy ad ugwan an būlan.
The rice (seedlings) are above the water level this month.
ma-: mapyu'
binunbun, Stages of Second-crop Rice-Seedling Growth,
inhapna', Stages of Main-Crop Rice-Seedling Growth,