Performance 如何根据给定的统计信息计算响应时间（不包括延迟）

我试图计算每个请求的响应时间。我正在使用Fiddler工具监控流量。它提供了以下统计数据：

ACTUAL PERFORMANCE
--------------
ClientConnected:    07:37:07.616
ClientBeginRequest: 07:37:12.993
GotRequestHeaders:  07:37:12.993
ClientDoneRequest:  07:37:12.993
Determine Gateway:  0ms
DNS Lookup:         0ms
TCP/IP Connect:     0ms
HTTPS Handshake:    0ms
ServerConnected:    07:37:07.622
FiddlerBeginRequest:07:37:12.993
ServerGotRequest:   07:37:12.993
ServerBeginResponse:07:37:12.995
GotResponseHeaders: 07:37:12.995
ServerDoneResponse: 07:37:13.003
ClientBeginResponse:07:37:13.003
ClientDoneResponse: 07:37:13.003
Overall Elapsed:    00:00:00.0099623

---

我不确定这里哪些参数对于计算响应时间（不包括网络延迟等）很重要。我应该怎么做？应该使用哪个公式？

由于网络原因，延迟基本上是下载响应所需的时间。 响应时间为TTLB（到最后一个字节的时间）

因此，为了获得响应时间（无延迟）。。我用了下面的公式

=TTLB-（TTFB-TTLB）

及

Where TTLB starts from ClientDoneRequest and ends at ClientDoneResponse =
ClientDoneRequest:  07:37:12.993
Determine Gateway:  0ms
DNS Lookup:         0ms
TCP/IP Connect:     0ms
HTTPS Handshake:    0ms
ServerConnected:    07:37:07.622
FiddlerBeginRequest:07:37:12.993
ServerGotRequest:   07:37:12.993
ServerBeginResponse:07:37:12.995
GotResponseHeaders: 07:37:12.995
ServerDoneResponse: 07:37:13.003
ClientBeginResponse:07:37:13.003
ClientDoneResponse: 07:37:13.003

TTFB starts from ClientDoneRequest and ends at ClientBeginResponse =
ClientDoneRequest:  07:37:12.993
Determine Gateway:  0ms
DNS Lookup:         0ms
TCP/IP Connect:     0ms
HTTPS Handshake:    0ms
ServerConnected:    07:37:07.622
FiddlerBeginRequest:07:37:12.993
ServerGotRequest:   07:37:12.993
ServerBeginResponse:07:37:12.995
GotResponseHeaders: 07:37:12.995
ServerDoneResponse: 07:37:13.003
ClientBeginResponse:07:37:13.003