Seen hits bracket a ceiling while occupancy fractions stay exact. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Four seen hits stay below the ceiling
Raw hits 6 split into seen 4 and masked 2 against capacity 8.
m=Nmax−Ns=6−4=2,o=1/2
Six seen hits land on the ceiling
Raw hits 8 split into seen 6 and masked 2 against capacity 8.
m=Nmax−Ns=6−6=0,o=3/4
Eight seen hits exceed the ceiling
Raw hits 9 split into seen 8 and masked 1 against capacity 8.