How does laravel get the error level in the configureMonologUsing method

the version number of laravel is 5.5

I try to put different error level files in one directory according to the number of days

$app->configureMonologUsing(function ($monolog) {
    // dd($monolog);
    $file = storage_path("logs" . DIRECTORY_SEPARATOR . Date("Y-m-d", time()) . DIRECTORY_SEPARATOR . $level . ".log");
    $monolog->pushHandler(new StreamHandler($file));
});

here, this $level is the error level. Can this level be obtained from the $monolog instance? I"ve seen that there is only the default debug , the default lowest level

ask God for help. Thank you very much

Laravel php

Mar.29,2021

//

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