gistfile1.txt

$request_time	$upstream_response_time		($request_time-$upstream_response_time)
4.274                      0.272                      4.00
4.297                      0.411                      3.89
5.241                      0.241                      5.00
4.905                      0.302                      4.60
4.905                      0.462                      4.44
5.022                      0.540                      4.48
4.835                      0.255                      4.58
4.582                      0.252                      4.33
4.633                      0.469                      4.16
4.491                      0.252                      4.24
4.393                      0.360                      4.03
4.394                      0.600                      3.79
1.741                      1.733                      0.01
4.683                      0.253                      4.43
4.450                      0.768                      3.68
4.450                      0.606                      3.84
5.198                      3.516                      1.68
4.678                      0.634                      4.04
5.197                      0.360                      4.84
4.932                      0.235                      4.70
1.135                      1.121                      0.01
5.196                      0.443                      4.75
26.167                      0.822                      25.35
4.548                      0.239                      4.31
60.771                      0.810                      59.96
61.242                      1.253                      59.99