/*compute the latency mean of each <speed, nHops, latency> point*/NR == 2		{			speed = $1;			hops = $2;			lat = $3;			samples = 1;		}NR > 2		{			if( (speed != $1) || (hops != $2) )			{				/* print the computed <speed, nHops, latency> point */								printf"%d \t %f\n", hops, lat/samples;							/* create a new graph index for gnuplot compatibility */				if(speed != $1)					printf"\n\n";				/* reinitialize the variables  */				samples = 1;				speed = $1;				hops = $2;				lat = $3;			}			else			{				samples ++;				lat += $3;			}		}END		{			/* print the last row that otherwise wouldn't be printed */						printf"%d \t %f\n", hops, lat/samples;									}