Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Was this capture taken KOEO or at idle? Because lots of electronic throttle systems will limit throttle blade opening under those conditions as part of it's normal operating strategy. You may only get a wide open throttle when driving down the road.
Like guafa asked, any trouble codes? It's become my personal rule over the years that if I don't see any ETC or related codes, then it's very likely the throttle is doing exactly what it's told to be doing.