Storage fill indicators

[summer vector]

The large storage that has 4 groups of 5 lights to show how full it is, doesn't seem to be working quite correctly.

A large storage that can hold 2048 items shows all 5 lights lit with only 1400 items in it.

I would expect the lights to light up every 340
so 0 to 340 = 0 lights.
0 to 680 =1
to 1020= 2
to 1360 = 3
to 1700 = 4
1701+ = 5.