Log analytics: importing load time (no replies)

Hey I have spent a lot of time looking for similar solutions. If I have overlooked some obvious solution let me know.

I am currently importing some apache logs. The logs import successfully without me specify the log format. However I need to craft some regex to capture the %D from my apache logs.

The format for my log is as follows:
LogFormat "%h %l %u %t %D \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\""
It similar to the NCSA which is:
"%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\""
The regex for NCSA is:
'(?P<ip>\S+) \S+ \S+ [(?P<date>.*?) (?P<timezone>.*?)\] ' '"\S+ (?P<path>.*?) \S+" (?P<status>\S+) (?P<length>\S+) "(?P<referrer>.*?)" "(?P<user_agent>.*?)" '
The piwik site says I ought to be able to include generation_time_milli regex group to capture this. I know that I am close. I am sorry if it seem like I'm lazy. My regex skills are weak :p . Thanks for your time. I would be willing to provide additional information (example log lines etcetera).