The Distribution tab sets parameters of the Distribution Graph.
Bar Width: Sets the bar width to 1, 5, 10, 15, 20, 25 or 50 Units
Include Zero Readings: Sets whether or not zero readings are included in the graph. Setting this on for cadence or power can make the first column quite large, and can distort the readings for the other values, for sessions where the rider spent time coasting or freewheeling.
Bar Colour: Sets the colour of the bars in the graph. Click the coloured rectangle to change.
Label Colour: Sets the colour used for the text labels. Click on the coloured rectange to change
X-Axis: Sets the lower and upper limits of the graph X-Axis