Regex to parse IIS Logs

ParseIIS.ps1

pushd  C:\inetpub\logs\LogFiles\W3SVC1
[Regex]$regex = '^(?<date>[\d-]+)\s(?<time>[\d\:]+)\s(?<ServerIP>[\d\.]+)\s(?<method>\S+)\s(?<path>\S+)\s(?<querystring>\S+)\s(?<port>\d+)\s(?<username>\S+)\s(?<clientIP>[\d\.]+)\s(?<browser>\S+)\s(?<fulluri>\S+)\s(?<HttpStatus>\d+)\s(?<a>\d+)\s(?<b>\d+)\s(?<c>\d+)$'
cat 'u_ex201015.log' | ?{$_ -like '2020-10-15 07*'} | %{
    if ($_ -match $regex) {
        ([PSCustomObject]$Matches) 
    } else {
        throw "Unexpected line format: '$_'"
    }
} | ft time, ClientIP, username, httpstatus, port, path, querystring -AutoSize
popd