pfSense

	for(var i = 0; i < interfaceSize; i ++){

		priorIn[i] = new Array();

		priorOut[i] = new Array();

			priorIn[i][0] = 0;

			priorOut[i][0] = 0;

		}

					var trafficIn = ( priorIn[interfaceCount].reduce(function(a, b){ return a + b; },0) + currentIn)/(1 + priorIn[interfaceCount].length);

					var trafficOut = ( priorOut[interfaceCount].reduce(function(a, b){ return a + b; },0) + currentOut) /(1 + priorOut[interfaceCount].length);

					// circular array to keep track of 'x' amount of data points

					if(window.invert) {

						trafficOut = 0 - trafficOut;

					}

				interfaceCount = interfaceCount % interfaceSize;

			});

			// increment the circular array

			refreshGraphFunction_running = false;

		});