Axis & Grid Styling

Open Settings on the plot toolbar to style the axes and grid. Font weights throughout accept 100 to 900 (100 is thin, 400 is normal, 700 is bold).

Ticks

Ticks are the concentric value rings and their labels.

Count is how many ticks you'd like, from 1 to 20. The axis is rounded to "nice" values, so the Actual count shown may differ slightly from what you request.
Label size sets the tick label font size, 8 to 24px.
Label weight sets the tick label font weight, 100 to 900.

2 ticks

6 ticks

Direction Labels

The labels around the plot (N/E/S/W or degrees, see Configuring Directions).

Size sets the font size, 8 to 32px.
Weight sets the font weight, 100 to 900.

Y-Axis

Controls the value axis and its unit label.

Pad angle is the gap between direction wedges, 0.00 to 1.00. Higher values separate the wedges more; 0 makes them touch.
Max Y fixes the top of the value scale. Leave it at 0 for auto (the scale grows to fit your data). Set a value to pin the maximum, which is useful when comparing several plots on the same scale.
Unit font size sets the size of the unit label, 8 to 32px.
Unit font weight sets the weight of the unit label, 100 to 900.

Pad angle 0 (wedges touch)

Pad angle 0.1 (separated)

Editing the Unit Label

The unit text itself (default %) is edited directly on the plot: click the dotted-underlined unit label near the value axis, type a new value (for example Hours or %), and press Enter. Drag the small handle next to it to reposition the label; its position is remembered.

Grid

The background guide lines.

Radial lines sets the color of the spokes running out from the center.
Tick rings sets the color of the concentric value rings.
Dashed radial lines toggles the spokes between dashed and solid.
Dashed rings toggles the value rings between dashed and solid.