Colors = id:canvas value:rgb(0.937,0.937,0.937) id:linemark value:gray(0.8) id:linemark2 value:gray(0.9) BackgroundColors = canvas:canvas PlotData = mark:(line,linemark) from:start till:4 color:blue shift:(20,-5) text:Johnny Aitken (Laps 1–4) from:4 till:9 color:green shift:(20,-5) text:Spencer Wishart (Laps 5–9) from:9 till:13 color:purple shift:(20,-5) text:Fred Belcher (Laps 10–13) from:13 till:19 color:orange shift:(20,-5) text:David Bruce-Brown (Laps 14–19) from:19 till:23 color:red shift:(20,-5) text:Ralph DePalma (Laps 20–23) from:23 till:72 color:orange shift:(20,-5) text:David Bruce-Brown (Laps 24–72) from:72 till:76 color:blue shift:(20,-5) text:Johnny Aitken (Laps 73–76) from:76 till:102 color:orange shift:(20,-5) text:David Bruce-Brown (Laps 77–102) from:10