$a = Import-Csv -Path C:\inetpub\logs\LogFiles\W3SVC1\u_ex191022.log -Delimiter " " -Encoding "UTF8" -Header @("date", "time", "s-ip", "cs-method", "cs-uri-stem", "cs-uri-query", "s-port", "cs-username", "c-ip", "cs-UserAgent", "cs-Referer", "sc-status", "sc-substatus", "sc-win32-status", "time-taken")

Die ersten drei Elemente sind dabei allerdings nicht zu gebrauchen.