#import "../lib/unify.typ": qty, qtyrange

#figure(
  table(
    columns: 3,
    table.header([Zone], [Rail], [Typical area]),
    [Zone 1], [$plus qty(15, "V")$], [$qtyrange(30, 40, "percent")$],

    [Zone 2], [$qty(-15, "V")$], [$qtyrange(30, 40, "percent")$],

    [Zone 3], [$plus qty(5, "V")$ (if needed)], [$qtyrange(10, 15, "percent")$],

    [Zone 4], [$qty(-5, "V")$ (if needed)], [$qtyrange(10, 15, "percent")$],
  ),
  caption: [PCB power planes],
) <table-pcb-power-planes>